Download DUET Master 2018 DU PhD in Physics Question Paper With Answer Key

Download DUET (Delhi University Entrance Test conducted by the NTA) 2018 DU PhD in Physics Question Paper With Solution Key

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DU PhD in Physics
Topic:- DU_J18_PHD_PHY_Topic01
An infinite long wire carries a time independent current I=1 Ampere. The wire is bent and a semi-circle detour of radius R = 1 cm is
made with the centre at the origin. The magnitude of magnetic field at the origin is
[Question ID = 19633]
1. [Option ID = 48525]
2. [Option ID = 48523]
3. [Option ID = 48524]
4. [Option ID = 48526]
Correct Answer :-
[Option ID = 48524]
In a rotational structure of electronic bands (the transition between rotational levels of the different electronic levels) having larger
rotational constant of the upper electronic level than the lower one,
[Question ID = 19617]
1. band head appears in R-branch [Option ID = 48460]
2. band head appears in P-branch [Option ID = 48459]
3. band head appears in Q-branch [Option ID = 48461]
4. no band head appears [Option ID = 48462]
Correct Answer :-
band head appears in P-branch [Option ID = 48459]
In a bistable multivibrator, commutating capacitors are used to
[Question ID = 19610]
1. change the frequency of the output [Option ID = 48433]
2. provide a.c. coupling [Option ID = 48432]
3. increase the base storage output [Option ID = 48434]
4. increase the speed of response [Option ID = 48431]
Correct Answer :-
increase the speed of response [Option ID = 48431]
In the Geiger Muller (GM) region, when the applied voltage is increased, which of the following happens: [Question ID = 19623]
1. The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
2. The pulse amplitude remains nearly constant and the counting rate increases. [Option ID = 48484]
3. Both the pulse amplitude and the counting rate increases. [Option ID = 48485]
4. Both the pulse amplitude and counting rate remain nearly constant. [Option ID = 48486]
Correct Answer :-
The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
In the absorption spectra of harmonic vibrating diatomic oscillator, only one spectral line is observed. It is because [Question ID =
19618]
1. Separation between any two adjacent E-level is same [Option ID = 48465]
2. All other lines are very weak in intensity [Option ID = 48466]
3. Only one molecule is present in a particular E-level [Option ID = 48464]
4. Only one transition is possible from ground E-level to higher E-level [Option ID = 48463]
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DU PhD in Physics
Topic:- DU_J18_PHD_PHY_Topic01
An infinite long wire carries a time independent current I=1 Ampere. The wire is bent and a semi-circle detour of radius R = 1 cm is
made with the centre at the origin. The magnitude of magnetic field at the origin is
[Question ID = 19633]
1. [Option ID = 48525]
2. [Option ID = 48523]
3. [Option ID = 48524]
4. [Option ID = 48526]
Correct Answer :-
[Option ID = 48524]
In a rotational structure of electronic bands (the transition between rotational levels of the different electronic levels) having larger
rotational constant of the upper electronic level than the lower one,
[Question ID = 19617]
1. band head appears in R-branch [Option ID = 48460]
2. band head appears in P-branch [Option ID = 48459]
3. band head appears in Q-branch [Option ID = 48461]
4. no band head appears [Option ID = 48462]
Correct Answer :-
band head appears in P-branch [Option ID = 48459]
In a bistable multivibrator, commutating capacitors are used to
[Question ID = 19610]
1. change the frequency of the output [Option ID = 48433]
2. provide a.c. coupling [Option ID = 48432]
3. increase the base storage output [Option ID = 48434]
4. increase the speed of response [Option ID = 48431]
Correct Answer :-
increase the speed of response [Option ID = 48431]
In the Geiger Muller (GM) region, when the applied voltage is increased, which of the following happens: [Question ID = 19623]
1. The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
2. The pulse amplitude remains nearly constant and the counting rate increases. [Option ID = 48484]
3. Both the pulse amplitude and the counting rate increases. [Option ID = 48485]
4. Both the pulse amplitude and counting rate remain nearly constant. [Option ID = 48486]
Correct Answer :-
The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
In the absorption spectra of harmonic vibrating diatomic oscillator, only one spectral line is observed. It is because [Question ID =
19618]
1. Separation between any two adjacent E-level is same [Option ID = 48465]
2. All other lines are very weak in intensity [Option ID = 48466]
3. Only one molecule is present in a particular E-level [Option ID = 48464]
4. Only one transition is possible from ground E-level to higher E-level [Option ID = 48463]
6)
7)
8)
9)
10)
Correct Answer :-
Separation between any two adjacent E-level is same [Option ID = 48465]
Magnetic field required to bend a non-relativistic charge particle of energy E in an arc of radius R is [Question ID = 19632]
1. [Option ID = 48520]
2. [Option ID = 48521]
3. [Option ID = 48519]
4. [Option ID = 48522]
Correct Answer :-
[Option ID = 48519]
The number of ways in which two particles can be distributed in six states, if the particles are indistinguishable and only one particle
can occupy any one state, is [Question ID = 19612]
1. 31 [Option ID = 48440]
2. 36 [Option ID = 48439]
3. 21 [Option ID = 48442]
4. 25 [Option ID = 48441]
Correct Answer :-
[Question ID = 19635]
1. [Option ID = 48531]
2. [Option ID = 48534]
3. [Option ID = 48532]
4. [Option ID = 48533]
Correct Answer :-
[Option ID = 48531]
[Question ID = 19630]
1. [Option ID = 48512]
2. [Option ID = 48511]
3. [Option ID = 48514]
4. [Option ID = 48513]
Correct Answer :-
[Option ID = 48513]
FirstRanker.com - FirstRanker's Choice
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DU PhD in Physics
Topic:- DU_J18_PHD_PHY_Topic01
An infinite long wire carries a time independent current I=1 Ampere. The wire is bent and a semi-circle detour of radius R = 1 cm is
made with the centre at the origin. The magnitude of magnetic field at the origin is
[Question ID = 19633]
1. [Option ID = 48525]
2. [Option ID = 48523]
3. [Option ID = 48524]
4. [Option ID = 48526]
Correct Answer :-
[Option ID = 48524]
In a rotational structure of electronic bands (the transition between rotational levels of the different electronic levels) having larger
rotational constant of the upper electronic level than the lower one,
[Question ID = 19617]
1. band head appears in R-branch [Option ID = 48460]
2. band head appears in P-branch [Option ID = 48459]
3. band head appears in Q-branch [Option ID = 48461]
4. no band head appears [Option ID = 48462]
Correct Answer :-
band head appears in P-branch [Option ID = 48459]
In a bistable multivibrator, commutating capacitors are used to
[Question ID = 19610]
1. change the frequency of the output [Option ID = 48433]
2. provide a.c. coupling [Option ID = 48432]
3. increase the base storage output [Option ID = 48434]
4. increase the speed of response [Option ID = 48431]
Correct Answer :-
increase the speed of response [Option ID = 48431]
In the Geiger Muller (GM) region, when the applied voltage is increased, which of the following happens: [Question ID = 19623]
1. The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
2. The pulse amplitude remains nearly constant and the counting rate increases. [Option ID = 48484]
3. Both the pulse amplitude and the counting rate increases. [Option ID = 48485]
4. Both the pulse amplitude and counting rate remain nearly constant. [Option ID = 48486]
Correct Answer :-
The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
In the absorption spectra of harmonic vibrating diatomic oscillator, only one spectral line is observed. It is because [Question ID =
19618]
1. Separation between any two adjacent E-level is same [Option ID = 48465]
2. All other lines are very weak in intensity [Option ID = 48466]
3. Only one molecule is present in a particular E-level [Option ID = 48464]
4. Only one transition is possible from ground E-level to higher E-level [Option ID = 48463]
6)
7)
8)
9)
10)
Correct Answer :-
Separation between any two adjacent E-level is same [Option ID = 48465]
Magnetic field required to bend a non-relativistic charge particle of energy E in an arc of radius R is [Question ID = 19632]
1. [Option ID = 48520]
2. [Option ID = 48521]
3. [Option ID = 48519]
4. [Option ID = 48522]
Correct Answer :-
[Option ID = 48519]
The number of ways in which two particles can be distributed in six states, if the particles are indistinguishable and only one particle
can occupy any one state, is [Question ID = 19612]
1. 31 [Option ID = 48440]
2. 36 [Option ID = 48439]
3. 21 [Option ID = 48442]
4. 25 [Option ID = 48441]
Correct Answer :-
[Question ID = 19635]
1. [Option ID = 48531]
2. [Option ID = 48534]
3. [Option ID = 48532]
4. [Option ID = 48533]
Correct Answer :-
[Option ID = 48531]
[Question ID = 19630]
1. [Option ID = 48512]
2. [Option ID = 48511]
3. [Option ID = 48514]
4. [Option ID = 48513]
Correct Answer :-
[Option ID = 48513]
11)
12)
13)
[Question ID = 19597]
1. [Option ID = 48380]
2. [Option ID = 48382]
3. [Option ID = 48379]
4. [Option ID = 48381]
Correct Answer :-
[Option ID = 48380]
[Question ID = 19615]
1. [Option ID = 48452]
2. [Option ID = 48451]
3. [Option ID = 48453]
4. [Option ID = 48454]
Correct Answer :-
[Option ID = 48451]
[Question ID = 19594]
1. [Option ID = 48368]
2. [Option ID = 48370]
3. [Option ID = 48367]
4. [Option ID = 48369]
Correct Answer :-
[Option ID = 48367]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
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DU PhD in Physics
Topic:- DU_J18_PHD_PHY_Topic01
An infinite long wire carries a time independent current I=1 Ampere. The wire is bent and a semi-circle detour of radius R = 1 cm is
made with the centre at the origin. The magnitude of magnetic field at the origin is
[Question ID = 19633]
1. [Option ID = 48525]
2. [Option ID = 48523]
3. [Option ID = 48524]
4. [Option ID = 48526]
Correct Answer :-
[Option ID = 48524]
In a rotational structure of electronic bands (the transition between rotational levels of the different electronic levels) having larger
rotational constant of the upper electronic level than the lower one,
[Question ID = 19617]
1. band head appears in R-branch [Option ID = 48460]
2. band head appears in P-branch [Option ID = 48459]
3. band head appears in Q-branch [Option ID = 48461]
4. no band head appears [Option ID = 48462]
Correct Answer :-
band head appears in P-branch [Option ID = 48459]
In a bistable multivibrator, commutating capacitors are used to
[Question ID = 19610]
1. change the frequency of the output [Option ID = 48433]
2. provide a.c. coupling [Option ID = 48432]
3. increase the base storage output [Option ID = 48434]
4. increase the speed of response [Option ID = 48431]
Correct Answer :-
increase the speed of response [Option ID = 48431]
In the Geiger Muller (GM) region, when the applied voltage is increased, which of the following happens: [Question ID = 19623]
1. The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
2. The pulse amplitude remains nearly constant and the counting rate increases. [Option ID = 48484]
3. Both the pulse amplitude and the counting rate increases. [Option ID = 48485]
4. Both the pulse amplitude and counting rate remain nearly constant. [Option ID = 48486]
Correct Answer :-
The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
In the absorption spectra of harmonic vibrating diatomic oscillator, only one spectral line is observed. It is because [Question ID =
19618]
1. Separation between any two adjacent E-level is same [Option ID = 48465]
2. All other lines are very weak in intensity [Option ID = 48466]
3. Only one molecule is present in a particular E-level [Option ID = 48464]
4. Only one transition is possible from ground E-level to higher E-level [Option ID = 48463]
6)
7)
8)
9)
10)
Correct Answer :-
Separation between any two adjacent E-level is same [Option ID = 48465]
Magnetic field required to bend a non-relativistic charge particle of energy E in an arc of radius R is [Question ID = 19632]
1. [Option ID = 48520]
2. [Option ID = 48521]
3. [Option ID = 48519]
4. [Option ID = 48522]
Correct Answer :-
[Option ID = 48519]
The number of ways in which two particles can be distributed in six states, if the particles are indistinguishable and only one particle
can occupy any one state, is [Question ID = 19612]
1. 31 [Option ID = 48440]
2. 36 [Option ID = 48439]
3. 21 [Option ID = 48442]
4. 25 [Option ID = 48441]
Correct Answer :-
[Question ID = 19635]
1. [Option ID = 48531]
2. [Option ID = 48534]
3. [Option ID = 48532]
4. [Option ID = 48533]
Correct Answer :-
[Option ID = 48531]
[Question ID = 19630]
1. [Option ID = 48512]
2. [Option ID = 48511]
3. [Option ID = 48514]
4. [Option ID = 48513]
Correct Answer :-
[Option ID = 48513]
11)
12)
13)
[Question ID = 19597]
1. [Option ID = 48380]
2. [Option ID = 48382]
3. [Option ID = 48379]
4. [Option ID = 48381]
Correct Answer :-
[Option ID = 48380]
[Question ID = 19615]
1. [Option ID = 48452]
2. [Option ID = 48451]
3. [Option ID = 48453]
4. [Option ID = 48454]
Correct Answer :-
[Option ID = 48451]
[Question ID = 19594]
1. [Option ID = 48368]
2. [Option ID = 48370]
3. [Option ID = 48367]
4. [Option ID = 48369]
Correct Answer :-
[Option ID = 48367]
14)
15)
16)
[Question ID = 19591]
1. [Option ID = 48358]
2. [Option ID = 48356]
3. [Option ID = 48357]
4. [Option ID = 48355]
Correct Answer :-
[Option ID = 48355]
[Question ID = 19599]
1. [Option ID = 48388]
2. [Option ID = 48390]
3. [Option ID = 48387]
4. [Option ID = 48389]
Correct Answer :-
[Option ID = 48390]
[Question ID = 19586]
1. [Option ID = 48335]
2. [Option ID = 48336]
3. [Option ID = 48337]
4. [Option ID = 48338]
Correct Answer :-
[Option ID = 48338]
[Question ID = 19589]
FirstRanker.com - FirstRanker's Choice
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DU PhD in Physics
Topic:- DU_J18_PHD_PHY_Topic01
An infinite long wire carries a time independent current I=1 Ampere. The wire is bent and a semi-circle detour of radius R = 1 cm is
made with the centre at the origin. The magnitude of magnetic field at the origin is
[Question ID = 19633]
1. [Option ID = 48525]
2. [Option ID = 48523]
3. [Option ID = 48524]
4. [Option ID = 48526]
Correct Answer :-
[Option ID = 48524]
In a rotational structure of electronic bands (the transition between rotational levels of the different electronic levels) having larger
rotational constant of the upper electronic level than the lower one,
[Question ID = 19617]
1. band head appears in R-branch [Option ID = 48460]
2. band head appears in P-branch [Option ID = 48459]
3. band head appears in Q-branch [Option ID = 48461]
4. no band head appears [Option ID = 48462]
Correct Answer :-
band head appears in P-branch [Option ID = 48459]
In a bistable multivibrator, commutating capacitors are used to
[Question ID = 19610]
1. change the frequency of the output [Option ID = 48433]
2. provide a.c. coupling [Option ID = 48432]
3. increase the base storage output [Option ID = 48434]
4. increase the speed of response [Option ID = 48431]
Correct Answer :-
increase the speed of response [Option ID = 48431]
In the Geiger Muller (GM) region, when the applied voltage is increased, which of the following happens: [Question ID = 19623]
1. The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
2. The pulse amplitude remains nearly constant and the counting rate increases. [Option ID = 48484]
3. Both the pulse amplitude and the counting rate increases. [Option ID = 48485]
4. Both the pulse amplitude and counting rate remain nearly constant. [Option ID = 48486]
Correct Answer :-
The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
In the absorption spectra of harmonic vibrating diatomic oscillator, only one spectral line is observed. It is because [Question ID =
19618]
1. Separation between any two adjacent E-level is same [Option ID = 48465]
2. All other lines are very weak in intensity [Option ID = 48466]
3. Only one molecule is present in a particular E-level [Option ID = 48464]
4. Only one transition is possible from ground E-level to higher E-level [Option ID = 48463]
6)
7)
8)
9)
10)
Correct Answer :-
Separation between any two adjacent E-level is same [Option ID = 48465]
Magnetic field required to bend a non-relativistic charge particle of energy E in an arc of radius R is [Question ID = 19632]
1. [Option ID = 48520]
2. [Option ID = 48521]
3. [Option ID = 48519]
4. [Option ID = 48522]
Correct Answer :-
[Option ID = 48519]
The number of ways in which two particles can be distributed in six states, if the particles are indistinguishable and only one particle
can occupy any one state, is [Question ID = 19612]
1. 31 [Option ID = 48440]
2. 36 [Option ID = 48439]
3. 21 [Option ID = 48442]
4. 25 [Option ID = 48441]
Correct Answer :-
[Question ID = 19635]
1. [Option ID = 48531]
2. [Option ID = 48534]
3. [Option ID = 48532]
4. [Option ID = 48533]
Correct Answer :-
[Option ID = 48531]
[Question ID = 19630]
1. [Option ID = 48512]
2. [Option ID = 48511]
3. [Option ID = 48514]
4. [Option ID = 48513]
Correct Answer :-
[Option ID = 48513]
11)
12)
13)
[Question ID = 19597]
1. [Option ID = 48380]
2. [Option ID = 48382]
3. [Option ID = 48379]
4. [Option ID = 48381]
Correct Answer :-
[Option ID = 48380]
[Question ID = 19615]
1. [Option ID = 48452]
2. [Option ID = 48451]
3. [Option ID = 48453]
4. [Option ID = 48454]
Correct Answer :-
[Option ID = 48451]
[Question ID = 19594]
1. [Option ID = 48368]
2. [Option ID = 48370]
3. [Option ID = 48367]
4. [Option ID = 48369]
Correct Answer :-
[Option ID = 48367]
14)
15)
16)
[Question ID = 19591]
1. [Option ID = 48358]
2. [Option ID = 48356]
3. [Option ID = 48357]
4. [Option ID = 48355]
Correct Answer :-
[Option ID = 48355]
[Question ID = 19599]
1. [Option ID = 48388]
2. [Option ID = 48390]
3. [Option ID = 48387]
4. [Option ID = 48389]
Correct Answer :-
[Option ID = 48390]
[Question ID = 19586]
1. [Option ID = 48335]
2. [Option ID = 48336]
3. [Option ID = 48337]
4. [Option ID = 48338]
Correct Answer :-
[Option ID = 48338]
[Question ID = 19589]
17)
18)
19)
1. [Option ID = 48350]
2. [Option ID = 48348]
3. [Option ID = 48349]
4. [Option ID = 48347]
Correct Answer :-
[Option ID = 48349]
[Question ID = 19596]
1. [Option ID = 48378]
2. [Option ID = 48376]
3. [Option ID = 48377]
4. [Option ID = 48375]
Correct Answer :-
[Question ID = 19614]
1. [Option ID = 48449]
2. [Option ID = 48448]
3. [Option ID = 48450]
4. [Option ID = 48447]
Correct Answer :-
[Option ID = 48447]
[Question ID = 19590]
1. [Option ID = 48351]
2. [Option ID = 48354]
3. [Option ID = 48353]
4. [Option ID = 48352]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
DU PhD in Physics
Topic:- DU_J18_PHD_PHY_Topic01
An infinite long wire carries a time independent current I=1 Ampere. The wire is bent and a semi-circle detour of radius R = 1 cm is
made with the centre at the origin. The magnitude of magnetic field at the origin is
[Question ID = 19633]
1. [Option ID = 48525]
2. [Option ID = 48523]
3. [Option ID = 48524]
4. [Option ID = 48526]
Correct Answer :-
[Option ID = 48524]
In a rotational structure of electronic bands (the transition between rotational levels of the different electronic levels) having larger
rotational constant of the upper electronic level than the lower one,
[Question ID = 19617]
1. band head appears in R-branch [Option ID = 48460]
2. band head appears in P-branch [Option ID = 48459]
3. band head appears in Q-branch [Option ID = 48461]
4. no band head appears [Option ID = 48462]
Correct Answer :-
band head appears in P-branch [Option ID = 48459]
In a bistable multivibrator, commutating capacitors are used to
[Question ID = 19610]
1. change the frequency of the output [Option ID = 48433]
2. provide a.c. coupling [Option ID = 48432]
3. increase the base storage output [Option ID = 48434]
4. increase the speed of response [Option ID = 48431]
Correct Answer :-
increase the speed of response [Option ID = 48431]
In the Geiger Muller (GM) region, when the applied voltage is increased, which of the following happens: [Question ID = 19623]
1. The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
2. The pulse amplitude remains nearly constant and the counting rate increases. [Option ID = 48484]
3. Both the pulse amplitude and the counting rate increases. [Option ID = 48485]
4. Both the pulse amplitude and counting rate remain nearly constant. [Option ID = 48486]
Correct Answer :-
The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
In the absorption spectra of harmonic vibrating diatomic oscillator, only one spectral line is observed. It is because [Question ID =
19618]
1. Separation between any two adjacent E-level is same [Option ID = 48465]
2. All other lines are very weak in intensity [Option ID = 48466]
3. Only one molecule is present in a particular E-level [Option ID = 48464]
4. Only one transition is possible from ground E-level to higher E-level [Option ID = 48463]
6)
7)
8)
9)
10)
Correct Answer :-
Separation between any two adjacent E-level is same [Option ID = 48465]
Magnetic field required to bend a non-relativistic charge particle of energy E in an arc of radius R is [Question ID = 19632]
1. [Option ID = 48520]
2. [Option ID = 48521]
3. [Option ID = 48519]
4. [Option ID = 48522]
Correct Answer :-
[Option ID = 48519]
The number of ways in which two particles can be distributed in six states, if the particles are indistinguishable and only one particle
can occupy any one state, is [Question ID = 19612]
1. 31 [Option ID = 48440]
2. 36 [Option ID = 48439]
3. 21 [Option ID = 48442]
4. 25 [Option ID = 48441]
Correct Answer :-
[Question ID = 19635]
1. [Option ID = 48531]
2. [Option ID = 48534]
3. [Option ID = 48532]
4. [Option ID = 48533]
Correct Answer :-
[Option ID = 48531]
[Question ID = 19630]
1. [Option ID = 48512]
2. [Option ID = 48511]
3. [Option ID = 48514]
4. [Option ID = 48513]
Correct Answer :-
[Option ID = 48513]
11)
12)
13)
[Question ID = 19597]
1. [Option ID = 48380]
2. [Option ID = 48382]
3. [Option ID = 48379]
4. [Option ID = 48381]
Correct Answer :-
[Option ID = 48380]
[Question ID = 19615]
1. [Option ID = 48452]
2. [Option ID = 48451]
3. [Option ID = 48453]
4. [Option ID = 48454]
Correct Answer :-
[Option ID = 48451]
[Question ID = 19594]
1. [Option ID = 48368]
2. [Option ID = 48370]
3. [Option ID = 48367]
4. [Option ID = 48369]
Correct Answer :-
[Option ID = 48367]
14)
15)
16)
[Question ID = 19591]
1. [Option ID = 48358]
2. [Option ID = 48356]
3. [Option ID = 48357]
4. [Option ID = 48355]
Correct Answer :-
[Option ID = 48355]
[Question ID = 19599]
1. [Option ID = 48388]
2. [Option ID = 48390]
3. [Option ID = 48387]
4. [Option ID = 48389]
Correct Answer :-
[Option ID = 48390]
[Question ID = 19586]
1. [Option ID = 48335]
2. [Option ID = 48336]
3. [Option ID = 48337]
4. [Option ID = 48338]
Correct Answer :-
[Option ID = 48338]
[Question ID = 19589]
17)
18)
19)
1. [Option ID = 48350]
2. [Option ID = 48348]
3. [Option ID = 48349]
4. [Option ID = 48347]
Correct Answer :-
[Option ID = 48349]
[Question ID = 19596]
1. [Option ID = 48378]
2. [Option ID = 48376]
3. [Option ID = 48377]
4. [Option ID = 48375]
Correct Answer :-
[Question ID = 19614]
1. [Option ID = 48449]
2. [Option ID = 48448]
3. [Option ID = 48450]
4. [Option ID = 48447]
Correct Answer :-
[Option ID = 48447]
[Question ID = 19590]
1. [Option ID = 48351]
2. [Option ID = 48354]
3. [Option ID = 48353]
4. [Option ID = 48352]
20)
21)
22)
Correct Answer :-
[Option ID = 48353]
[Question ID = 19613]
1. [Option ID = 48445]
2. [Option ID = 48443]
3. [Option ID = 48446]
4. [Option ID = 48444]
Correct Answer :-
[Option ID = 48445]
[Question ID = 19625]
1. [Option ID = 48491]
2. [Option ID = 48494]
3. [Option ID = 48492]
4. [Option ID = 48493]
Correct Answer :-
[Option ID = 48492]
[Question ID = 19604]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
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DU PhD in Physics
Topic:- DU_J18_PHD_PHY_Topic01
An infinite long wire carries a time independent current I=1 Ampere. The wire is bent and a semi-circle detour of radius R = 1 cm is
made with the centre at the origin. The magnitude of magnetic field at the origin is
[Question ID = 19633]
1. [Option ID = 48525]
2. [Option ID = 48523]
3. [Option ID = 48524]
4. [Option ID = 48526]
Correct Answer :-
[Option ID = 48524]
In a rotational structure of electronic bands (the transition between rotational levels of the different electronic levels) having larger
rotational constant of the upper electronic level than the lower one,
[Question ID = 19617]
1. band head appears in R-branch [Option ID = 48460]
2. band head appears in P-branch [Option ID = 48459]
3. band head appears in Q-branch [Option ID = 48461]
4. no band head appears [Option ID = 48462]
Correct Answer :-
band head appears in P-branch [Option ID = 48459]
In a bistable multivibrator, commutating capacitors are used to
[Question ID = 19610]
1. change the frequency of the output [Option ID = 48433]
2. provide a.c. coupling [Option ID = 48432]
3. increase the base storage output [Option ID = 48434]
4. increase the speed of response [Option ID = 48431]
Correct Answer :-
increase the speed of response [Option ID = 48431]
In the Geiger Muller (GM) region, when the applied voltage is increased, which of the following happens: [Question ID = 19623]
1. The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
2. The pulse amplitude remains nearly constant and the counting rate increases. [Option ID = 48484]
3. Both the pulse amplitude and the counting rate increases. [Option ID = 48485]
4. Both the pulse amplitude and counting rate remain nearly constant. [Option ID = 48486]
Correct Answer :-
The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
In the absorption spectra of harmonic vibrating diatomic oscillator, only one spectral line is observed. It is because [Question ID =
19618]
1. Separation between any two adjacent E-level is same [Option ID = 48465]
2. All other lines are very weak in intensity [Option ID = 48466]
3. Only one molecule is present in a particular E-level [Option ID = 48464]
4. Only one transition is possible from ground E-level to higher E-level [Option ID = 48463]
6)
7)
8)
9)
10)
Correct Answer :-
Separation between any two adjacent E-level is same [Option ID = 48465]
Magnetic field required to bend a non-relativistic charge particle of energy E in an arc of radius R is [Question ID = 19632]
1. [Option ID = 48520]
2. [Option ID = 48521]
3. [Option ID = 48519]
4. [Option ID = 48522]
Correct Answer :-
[Option ID = 48519]
The number of ways in which two particles can be distributed in six states, if the particles are indistinguishable and only one particle
can occupy any one state, is [Question ID = 19612]
1. 31 [Option ID = 48440]
2. 36 [Option ID = 48439]
3. 21 [Option ID = 48442]
4. 25 [Option ID = 48441]
Correct Answer :-
[Question ID = 19635]
1. [Option ID = 48531]
2. [Option ID = 48534]
3. [Option ID = 48532]
4. [Option ID = 48533]
Correct Answer :-
[Option ID = 48531]
[Question ID = 19630]
1. [Option ID = 48512]
2. [Option ID = 48511]
3. [Option ID = 48514]
4. [Option ID = 48513]
Correct Answer :-
[Option ID = 48513]
11)
12)
13)
[Question ID = 19597]
1. [Option ID = 48380]
2. [Option ID = 48382]
3. [Option ID = 48379]
4. [Option ID = 48381]
Correct Answer :-
[Option ID = 48380]
[Question ID = 19615]
1. [Option ID = 48452]
2. [Option ID = 48451]
3. [Option ID = 48453]
4. [Option ID = 48454]
Correct Answer :-
[Option ID = 48451]
[Question ID = 19594]
1. [Option ID = 48368]
2. [Option ID = 48370]
3. [Option ID = 48367]
4. [Option ID = 48369]
Correct Answer :-
[Option ID = 48367]
14)
15)
16)
[Question ID = 19591]
1. [Option ID = 48358]
2. [Option ID = 48356]
3. [Option ID = 48357]
4. [Option ID = 48355]
Correct Answer :-
[Option ID = 48355]
[Question ID = 19599]
1. [Option ID = 48388]
2. [Option ID = 48390]
3. [Option ID = 48387]
4. [Option ID = 48389]
Correct Answer :-
[Option ID = 48390]
[Question ID = 19586]
1. [Option ID = 48335]
2. [Option ID = 48336]
3. [Option ID = 48337]
4. [Option ID = 48338]
Correct Answer :-
[Option ID = 48338]
[Question ID = 19589]
17)
18)
19)
1. [Option ID = 48350]
2. [Option ID = 48348]
3. [Option ID = 48349]
4. [Option ID = 48347]
Correct Answer :-
[Option ID = 48349]
[Question ID = 19596]
1. [Option ID = 48378]
2. [Option ID = 48376]
3. [Option ID = 48377]
4. [Option ID = 48375]
Correct Answer :-
[Question ID = 19614]
1. [Option ID = 48449]
2. [Option ID = 48448]
3. [Option ID = 48450]
4. [Option ID = 48447]
Correct Answer :-
[Option ID = 48447]
[Question ID = 19590]
1. [Option ID = 48351]
2. [Option ID = 48354]
3. [Option ID = 48353]
4. [Option ID = 48352]
20)
21)
22)
Correct Answer :-
[Option ID = 48353]
[Question ID = 19613]
1. [Option ID = 48445]
2. [Option ID = 48443]
3. [Option ID = 48446]
4. [Option ID = 48444]
Correct Answer :-
[Option ID = 48445]
[Question ID = 19625]
1. [Option ID = 48491]
2. [Option ID = 48494]
3. [Option ID = 48492]
4. [Option ID = 48493]
Correct Answer :-
[Option ID = 48492]
[Question ID = 19604]
23)
24)
25)
1. [Option ID = 48407]
2. [Option ID = 48410]
3. [Option ID = 48408]
4. [Option ID = 48409]
Correct Answer :-
[Option ID = 48407]
[Question ID = 19603]
1. [Option ID = 48405]
2. [Option ID = 48406]
3. [Option ID = 48404]
4. [Option ID = 48403]
Correct Answer :-
[Option ID = 48404]
[Question ID = 19627]
1. [Option ID = 48502]
2. [Option ID = 48500]
3. [Option ID = 48499]
4. [Option ID = 48501]
Correct Answer :-
[Option ID = 48501]
[Question ID = 19600]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
DU PhD in Physics
Topic:- DU_J18_PHD_PHY_Topic01
An infinite long wire carries a time independent current I=1 Ampere. The wire is bent and a semi-circle detour of radius R = 1 cm is
made with the centre at the origin. The magnitude of magnetic field at the origin is
[Question ID = 19633]
1. [Option ID = 48525]
2. [Option ID = 48523]
3. [Option ID = 48524]
4. [Option ID = 48526]
Correct Answer :-
[Option ID = 48524]
In a rotational structure of electronic bands (the transition between rotational levels of the different electronic levels) having larger
rotational constant of the upper electronic level than the lower one,
[Question ID = 19617]
1. band head appears in R-branch [Option ID = 48460]
2. band head appears in P-branch [Option ID = 48459]
3. band head appears in Q-branch [Option ID = 48461]
4. no band head appears [Option ID = 48462]
Correct Answer :-
band head appears in P-branch [Option ID = 48459]
In a bistable multivibrator, commutating capacitors are used to
[Question ID = 19610]
1. change the frequency of the output [Option ID = 48433]
2. provide a.c. coupling [Option ID = 48432]
3. increase the base storage output [Option ID = 48434]
4. increase the speed of response [Option ID = 48431]
Correct Answer :-
increase the speed of response [Option ID = 48431]
In the Geiger Muller (GM) region, when the applied voltage is increased, which of the following happens: [Question ID = 19623]
1. The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
2. The pulse amplitude remains nearly constant and the counting rate increases. [Option ID = 48484]
3. Both the pulse amplitude and the counting rate increases. [Option ID = 48485]
4. Both the pulse amplitude and counting rate remain nearly constant. [Option ID = 48486]
Correct Answer :-
The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
In the absorption spectra of harmonic vibrating diatomic oscillator, only one spectral line is observed. It is because [Question ID =
19618]
1. Separation between any two adjacent E-level is same [Option ID = 48465]
2. All other lines are very weak in intensity [Option ID = 48466]
3. Only one molecule is present in a particular E-level [Option ID = 48464]
4. Only one transition is possible from ground E-level to higher E-level [Option ID = 48463]
6)
7)
8)
9)
10)
Correct Answer :-
Separation between any two adjacent E-level is same [Option ID = 48465]
Magnetic field required to bend a non-relativistic charge particle of energy E in an arc of radius R is [Question ID = 19632]
1. [Option ID = 48520]
2. [Option ID = 48521]
3. [Option ID = 48519]
4. [Option ID = 48522]
Correct Answer :-
[Option ID = 48519]
The number of ways in which two particles can be distributed in six states, if the particles are indistinguishable and only one particle
can occupy any one state, is [Question ID = 19612]
1. 31 [Option ID = 48440]
2. 36 [Option ID = 48439]
3. 21 [Option ID = 48442]
4. 25 [Option ID = 48441]
Correct Answer :-
[Question ID = 19635]
1. [Option ID = 48531]
2. [Option ID = 48534]
3. [Option ID = 48532]
4. [Option ID = 48533]
Correct Answer :-
[Option ID = 48531]
[Question ID = 19630]
1. [Option ID = 48512]
2. [Option ID = 48511]
3. [Option ID = 48514]
4. [Option ID = 48513]
Correct Answer :-
[Option ID = 48513]
11)
12)
13)
[Question ID = 19597]
1. [Option ID = 48380]
2. [Option ID = 48382]
3. [Option ID = 48379]
4. [Option ID = 48381]
Correct Answer :-
[Option ID = 48380]
[Question ID = 19615]
1. [Option ID = 48452]
2. [Option ID = 48451]
3. [Option ID = 48453]
4. [Option ID = 48454]
Correct Answer :-
[Option ID = 48451]
[Question ID = 19594]
1. [Option ID = 48368]
2. [Option ID = 48370]
3. [Option ID = 48367]
4. [Option ID = 48369]
Correct Answer :-
[Option ID = 48367]
14)
15)
16)
[Question ID = 19591]
1. [Option ID = 48358]
2. [Option ID = 48356]
3. [Option ID = 48357]
4. [Option ID = 48355]
Correct Answer :-
[Option ID = 48355]
[Question ID = 19599]
1. [Option ID = 48388]
2. [Option ID = 48390]
3. [Option ID = 48387]
4. [Option ID = 48389]
Correct Answer :-
[Option ID = 48390]
[Question ID = 19586]
1. [Option ID = 48335]
2. [Option ID = 48336]
3. [Option ID = 48337]
4. [Option ID = 48338]
Correct Answer :-
[Option ID = 48338]
[Question ID = 19589]
17)
18)
19)
1. [Option ID = 48350]
2. [Option ID = 48348]
3. [Option ID = 48349]
4. [Option ID = 48347]
Correct Answer :-
[Option ID = 48349]
[Question ID = 19596]
1. [Option ID = 48378]
2. [Option ID = 48376]
3. [Option ID = 48377]
4. [Option ID = 48375]
Correct Answer :-
[Question ID = 19614]
1. [Option ID = 48449]
2. [Option ID = 48448]
3. [Option ID = 48450]
4. [Option ID = 48447]
Correct Answer :-
[Option ID = 48447]
[Question ID = 19590]
1. [Option ID = 48351]
2. [Option ID = 48354]
3. [Option ID = 48353]
4. [Option ID = 48352]
20)
21)
22)
Correct Answer :-
[Option ID = 48353]
[Question ID = 19613]
1. [Option ID = 48445]
2. [Option ID = 48443]
3. [Option ID = 48446]
4. [Option ID = 48444]
Correct Answer :-
[Option ID = 48445]
[Question ID = 19625]
1. [Option ID = 48491]
2. [Option ID = 48494]
3. [Option ID = 48492]
4. [Option ID = 48493]
Correct Answer :-
[Option ID = 48492]
[Question ID = 19604]
23)
24)
25)
1. [Option ID = 48407]
2. [Option ID = 48410]
3. [Option ID = 48408]
4. [Option ID = 48409]
Correct Answer :-
[Option ID = 48407]
[Question ID = 19603]
1. [Option ID = 48405]
2. [Option ID = 48406]
3. [Option ID = 48404]
4. [Option ID = 48403]
Correct Answer :-
[Option ID = 48404]
[Question ID = 19627]
1. [Option ID = 48502]
2. [Option ID = 48500]
3. [Option ID = 48499]
4. [Option ID = 48501]
Correct Answer :-
[Option ID = 48501]
[Question ID = 19600]
26)
27)
28)
1. [Option ID = 48394]
2. [Option ID = 48392]
3. [Option ID = 48391]
4. [Option ID = 48393]
Correct Answer :-
[Option ID = 48391]
[Question ID = 19621]
1. [Option ID = 48477]
2. [Option ID = 48475]
3. [Option ID = 48478]
4. [Option ID = 48476]
Correct Answer :-
[Option ID = 48475]
[Question ID = 19587]
1. [Option ID = 48339]
2. [Option ID = 48342]
3. [Option ID = 48340]
4. [Option ID = 48341]
Correct Answer :-
[Option ID = 48341]
[Question ID = 19592]
1. [Option ID = 48361]
2. [Option ID = 48359]
3. [Option ID = 48360]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
DU PhD in Physics
Topic:- DU_J18_PHD_PHY_Topic01
An infinite long wire carries a time independent current I=1 Ampere. The wire is bent and a semi-circle detour of radius R = 1 cm is
made with the centre at the origin. The magnitude of magnetic field at the origin is
[Question ID = 19633]
1. [Option ID = 48525]
2. [Option ID = 48523]
3. [Option ID = 48524]
4. [Option ID = 48526]
Correct Answer :-
[Option ID = 48524]
In a rotational structure of electronic bands (the transition between rotational levels of the different electronic levels) having larger
rotational constant of the upper electronic level than the lower one,
[Question ID = 19617]
1. band head appears in R-branch [Option ID = 48460]
2. band head appears in P-branch [Option ID = 48459]
3. band head appears in Q-branch [Option ID = 48461]
4. no band head appears [Option ID = 48462]
Correct Answer :-
band head appears in P-branch [Option ID = 48459]
In a bistable multivibrator, commutating capacitors are used to
[Question ID = 19610]
1. change the frequency of the output [Option ID = 48433]
2. provide a.c. coupling [Option ID = 48432]
3. increase the base storage output [Option ID = 48434]
4. increase the speed of response [Option ID = 48431]
Correct Answer :-
increase the speed of response [Option ID = 48431]
In the Geiger Muller (GM) region, when the applied voltage is increased, which of the following happens: [Question ID = 19623]
1. The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
2. The pulse amplitude remains nearly constant and the counting rate increases. [Option ID = 48484]
3. Both the pulse amplitude and the counting rate increases. [Option ID = 48485]
4. Both the pulse amplitude and counting rate remain nearly constant. [Option ID = 48486]
Correct Answer :-
The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
In the absorption spectra of harmonic vibrating diatomic oscillator, only one spectral line is observed. It is because [Question ID =
19618]
1. Separation between any two adjacent E-level is same [Option ID = 48465]
2. All other lines are very weak in intensity [Option ID = 48466]
3. Only one molecule is present in a particular E-level [Option ID = 48464]
4. Only one transition is possible from ground E-level to higher E-level [Option ID = 48463]
6)
7)
8)
9)
10)
Correct Answer :-
Separation between any two adjacent E-level is same [Option ID = 48465]
Magnetic field required to bend a non-relativistic charge particle of energy E in an arc of radius R is [Question ID = 19632]
1. [Option ID = 48520]
2. [Option ID = 48521]
3. [Option ID = 48519]
4. [Option ID = 48522]
Correct Answer :-
[Option ID = 48519]
The number of ways in which two particles can be distributed in six states, if the particles are indistinguishable and only one particle
can occupy any one state, is [Question ID = 19612]
1. 31 [Option ID = 48440]
2. 36 [Option ID = 48439]
3. 21 [Option ID = 48442]
4. 25 [Option ID = 48441]
Correct Answer :-
[Question ID = 19635]
1. [Option ID = 48531]
2. [Option ID = 48534]
3. [Option ID = 48532]
4. [Option ID = 48533]
Correct Answer :-
[Option ID = 48531]
[Question ID = 19630]
1. [Option ID = 48512]
2. [Option ID = 48511]
3. [Option ID = 48514]
4. [Option ID = 48513]
Correct Answer :-
[Option ID = 48513]
11)
12)
13)
[Question ID = 19597]
1. [Option ID = 48380]
2. [Option ID = 48382]
3. [Option ID = 48379]
4. [Option ID = 48381]
Correct Answer :-
[Option ID = 48380]
[Question ID = 19615]
1. [Option ID = 48452]
2. [Option ID = 48451]
3. [Option ID = 48453]
4. [Option ID = 48454]
Correct Answer :-
[Option ID = 48451]
[Question ID = 19594]
1. [Option ID = 48368]
2. [Option ID = 48370]
3. [Option ID = 48367]
4. [Option ID = 48369]
Correct Answer :-
[Option ID = 48367]
14)
15)
16)
[Question ID = 19591]
1. [Option ID = 48358]
2. [Option ID = 48356]
3. [Option ID = 48357]
4. [Option ID = 48355]
Correct Answer :-
[Option ID = 48355]
[Question ID = 19599]
1. [Option ID = 48388]
2. [Option ID = 48390]
3. [Option ID = 48387]
4. [Option ID = 48389]
Correct Answer :-
[Option ID = 48390]
[Question ID = 19586]
1. [Option ID = 48335]
2. [Option ID = 48336]
3. [Option ID = 48337]
4. [Option ID = 48338]
Correct Answer :-
[Option ID = 48338]
[Question ID = 19589]
17)
18)
19)
1. [Option ID = 48350]
2. [Option ID = 48348]
3. [Option ID = 48349]
4. [Option ID = 48347]
Correct Answer :-
[Option ID = 48349]
[Question ID = 19596]
1. [Option ID = 48378]
2. [Option ID = 48376]
3. [Option ID = 48377]
4. [Option ID = 48375]
Correct Answer :-
[Question ID = 19614]
1. [Option ID = 48449]
2. [Option ID = 48448]
3. [Option ID = 48450]
4. [Option ID = 48447]
Correct Answer :-
[Option ID = 48447]
[Question ID = 19590]
1. [Option ID = 48351]
2. [Option ID = 48354]
3. [Option ID = 48353]
4. [Option ID = 48352]
20)
21)
22)
Correct Answer :-
[Option ID = 48353]
[Question ID = 19613]
1. [Option ID = 48445]
2. [Option ID = 48443]
3. [Option ID = 48446]
4. [Option ID = 48444]
Correct Answer :-
[Option ID = 48445]
[Question ID = 19625]
1. [Option ID = 48491]
2. [Option ID = 48494]
3. [Option ID = 48492]
4. [Option ID = 48493]
Correct Answer :-
[Option ID = 48492]
[Question ID = 19604]
23)
24)
25)
1. [Option ID = 48407]
2. [Option ID = 48410]
3. [Option ID = 48408]
4. [Option ID = 48409]
Correct Answer :-
[Option ID = 48407]
[Question ID = 19603]
1. [Option ID = 48405]
2. [Option ID = 48406]
3. [Option ID = 48404]
4. [Option ID = 48403]
Correct Answer :-
[Option ID = 48404]
[Question ID = 19627]
1. [Option ID = 48502]
2. [Option ID = 48500]
3. [Option ID = 48499]
4. [Option ID = 48501]
Correct Answer :-
[Option ID = 48501]
[Question ID = 19600]
26)
27)
28)
1. [Option ID = 48394]
2. [Option ID = 48392]
3. [Option ID = 48391]
4. [Option ID = 48393]
Correct Answer :-
[Option ID = 48391]
[Question ID = 19621]
1. [Option ID = 48477]
2. [Option ID = 48475]
3. [Option ID = 48478]
4. [Option ID = 48476]
Correct Answer :-
[Option ID = 48475]
[Question ID = 19587]
1. [Option ID = 48339]
2. [Option ID = 48342]
3. [Option ID = 48340]
4. [Option ID = 48341]
Correct Answer :-
[Option ID = 48341]
[Question ID = 19592]
1. [Option ID = 48361]
2. [Option ID = 48359]
3. [Option ID = 48360]
29)
30)
31)
32)
4. [Option ID = 48362]
Correct Answer :-
[Option ID = 48359]
[Question ID = 19601]
1. [Option ID = 48398]
2. [Option ID = 48395]
3. [Option ID = 48396]
4. [Option ID = 48397]
Correct Answer :-
[Option ID = 48395]
[Question ID = 19628]
1. [Option ID = 48506]
2. [Option ID = 48503]
3. [Option ID = 48505]
4. [Option ID = 48504]
Correct Answer :-
[Option ID = 48503]
[Question ID = 19607]
1. [Option ID = 48421]
2. [Option ID = 48419]
3. [Option ID = 48422]
4. [Option ID = 48420]
Correct Answer :-
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
DU PhD in Physics
Topic:- DU_J18_PHD_PHY_Topic01
An infinite long wire carries a time independent current I=1 Ampere. The wire is bent and a semi-circle detour of radius R = 1 cm is
made with the centre at the origin. The magnitude of magnetic field at the origin is
[Question ID = 19633]
1. [Option ID = 48525]
2. [Option ID = 48523]
3. [Option ID = 48524]
4. [Option ID = 48526]
Correct Answer :-
[Option ID = 48524]
In a rotational structure of electronic bands (the transition between rotational levels of the different electronic levels) having larger
rotational constant of the upper electronic level than the lower one,
[Question ID = 19617]
1. band head appears in R-branch [Option ID = 48460]
2. band head appears in P-branch [Option ID = 48459]
3. band head appears in Q-branch [Option ID = 48461]
4. no band head appears [Option ID = 48462]
Correct Answer :-
band head appears in P-branch [Option ID = 48459]
In a bistable multivibrator, commutating capacitors are used to
[Question ID = 19610]
1. change the frequency of the output [Option ID = 48433]
2. provide a.c. coupling [Option ID = 48432]
3. increase the base storage output [Option ID = 48434]
4. increase the speed of response [Option ID = 48431]
Correct Answer :-
increase the speed of response [Option ID = 48431]
In the Geiger Muller (GM) region, when the applied voltage is increased, which of the following happens: [Question ID = 19623]
1. The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
2. The pulse amplitude remains nearly constant and the counting rate increases. [Option ID = 48484]
3. Both the pulse amplitude and the counting rate increases. [Option ID = 48485]
4. Both the pulse amplitude and counting rate remain nearly constant. [Option ID = 48486]
Correct Answer :-
The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
In the absorption spectra of harmonic vibrating diatomic oscillator, only one spectral line is observed. It is because [Question ID =
19618]
1. Separation between any two adjacent E-level is same [Option ID = 48465]
2. All other lines are very weak in intensity [Option ID = 48466]
3. Only one molecule is present in a particular E-level [Option ID = 48464]
4. Only one transition is possible from ground E-level to higher E-level [Option ID = 48463]
6)
7)
8)
9)
10)
Correct Answer :-
Separation between any two adjacent E-level is same [Option ID = 48465]
Magnetic field required to bend a non-relativistic charge particle of energy E in an arc of radius R is [Question ID = 19632]
1. [Option ID = 48520]
2. [Option ID = 48521]
3. [Option ID = 48519]
4. [Option ID = 48522]
Correct Answer :-
[Option ID = 48519]
The number of ways in which two particles can be distributed in six states, if the particles are indistinguishable and only one particle
can occupy any one state, is [Question ID = 19612]
1. 31 [Option ID = 48440]
2. 36 [Option ID = 48439]
3. 21 [Option ID = 48442]
4. 25 [Option ID = 48441]
Correct Answer :-
[Question ID = 19635]
1. [Option ID = 48531]
2. [Option ID = 48534]
3. [Option ID = 48532]
4. [Option ID = 48533]
Correct Answer :-
[Option ID = 48531]
[Question ID = 19630]
1. [Option ID = 48512]
2. [Option ID = 48511]
3. [Option ID = 48514]
4. [Option ID = 48513]
Correct Answer :-
[Option ID = 48513]
11)
12)
13)
[Question ID = 19597]
1. [Option ID = 48380]
2. [Option ID = 48382]
3. [Option ID = 48379]
4. [Option ID = 48381]
Correct Answer :-
[Option ID = 48380]
[Question ID = 19615]
1. [Option ID = 48452]
2. [Option ID = 48451]
3. [Option ID = 48453]
4. [Option ID = 48454]
Correct Answer :-
[Option ID = 48451]
[Question ID = 19594]
1. [Option ID = 48368]
2. [Option ID = 48370]
3. [Option ID = 48367]
4. [Option ID = 48369]
Correct Answer :-
[Option ID = 48367]
14)
15)
16)
[Question ID = 19591]
1. [Option ID = 48358]
2. [Option ID = 48356]
3. [Option ID = 48357]
4. [Option ID = 48355]
Correct Answer :-
[Option ID = 48355]
[Question ID = 19599]
1. [Option ID = 48388]
2. [Option ID = 48390]
3. [Option ID = 48387]
4. [Option ID = 48389]
Correct Answer :-
[Option ID = 48390]
[Question ID = 19586]
1. [Option ID = 48335]
2. [Option ID = 48336]
3. [Option ID = 48337]
4. [Option ID = 48338]
Correct Answer :-
[Option ID = 48338]
[Question ID = 19589]
17)
18)
19)
1. [Option ID = 48350]
2. [Option ID = 48348]
3. [Option ID = 48349]
4. [Option ID = 48347]
Correct Answer :-
[Option ID = 48349]
[Question ID = 19596]
1. [Option ID = 48378]
2. [Option ID = 48376]
3. [Option ID = 48377]
4. [Option ID = 48375]
Correct Answer :-
[Question ID = 19614]
1. [Option ID = 48449]
2. [Option ID = 48448]
3. [Option ID = 48450]
4. [Option ID = 48447]
Correct Answer :-
[Option ID = 48447]
[Question ID = 19590]
1. [Option ID = 48351]
2. [Option ID = 48354]
3. [Option ID = 48353]
4. [Option ID = 48352]
20)
21)
22)
Correct Answer :-
[Option ID = 48353]
[Question ID = 19613]
1. [Option ID = 48445]
2. [Option ID = 48443]
3. [Option ID = 48446]
4. [Option ID = 48444]
Correct Answer :-
[Option ID = 48445]
[Question ID = 19625]
1. [Option ID = 48491]
2. [Option ID = 48494]
3. [Option ID = 48492]
4. [Option ID = 48493]
Correct Answer :-
[Option ID = 48492]
[Question ID = 19604]
23)
24)
25)
1. [Option ID = 48407]
2. [Option ID = 48410]
3. [Option ID = 48408]
4. [Option ID = 48409]
Correct Answer :-
[Option ID = 48407]
[Question ID = 19603]
1. [Option ID = 48405]
2. [Option ID = 48406]
3. [Option ID = 48404]
4. [Option ID = 48403]
Correct Answer :-
[Option ID = 48404]
[Question ID = 19627]
1. [Option ID = 48502]
2. [Option ID = 48500]
3. [Option ID = 48499]
4. [Option ID = 48501]
Correct Answer :-
[Option ID = 48501]
[Question ID = 19600]
26)
27)
28)
1. [Option ID = 48394]
2. [Option ID = 48392]
3. [Option ID = 48391]
4. [Option ID = 48393]
Correct Answer :-
[Option ID = 48391]
[Question ID = 19621]
1. [Option ID = 48477]
2. [Option ID = 48475]
3. [Option ID = 48478]
4. [Option ID = 48476]
Correct Answer :-
[Option ID = 48475]
[Question ID = 19587]
1. [Option ID = 48339]
2. [Option ID = 48342]
3. [Option ID = 48340]
4. [Option ID = 48341]
Correct Answer :-
[Option ID = 48341]
[Question ID = 19592]
1. [Option ID = 48361]
2. [Option ID = 48359]
3. [Option ID = 48360]
29)
30)
31)
32)
4. [Option ID = 48362]
Correct Answer :-
[Option ID = 48359]
[Question ID = 19601]
1. [Option ID = 48398]
2. [Option ID = 48395]
3. [Option ID = 48396]
4. [Option ID = 48397]
Correct Answer :-
[Option ID = 48395]
[Question ID = 19628]
1. [Option ID = 48506]
2. [Option ID = 48503]
3. [Option ID = 48505]
4. [Option ID = 48504]
Correct Answer :-
[Option ID = 48503]
[Question ID = 19607]
1. [Option ID = 48421]
2. [Option ID = 48419]
3. [Option ID = 48422]
4. [Option ID = 48420]
Correct Answer :-
33)
34)
35)
[Question ID = 19605]
1. [Option ID = 48412]
2. [Option ID = 48413]
3. [Option ID = 48411]
4. [Option ID = 48414]
Correct Answer :-
[Option ID = 48414]
[Question ID = 19620]
1. [Option ID = 48473]
2. [Option ID = 48472]
3. [Option ID = 48471]
4. [Option ID = 48474]
Correct Answer :-
[Option ID = 48471]
[Question ID = 19629]
1. None of these [Option ID = 48510]
2. [Option ID = 48509]
3. [Option ID = 48507]
4. [Option ID = 48508]
Correct Answer :-
[Option ID = 48509]
[Question ID = 19616]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
DU PhD in Physics
Topic:- DU_J18_PHD_PHY_Topic01
An infinite long wire carries a time independent current I=1 Ampere. The wire is bent and a semi-circle detour of radius R = 1 cm is
made with the centre at the origin. The magnitude of magnetic field at the origin is
[Question ID = 19633]
1. [Option ID = 48525]
2. [Option ID = 48523]
3. [Option ID = 48524]
4. [Option ID = 48526]
Correct Answer :-
[Option ID = 48524]
In a rotational structure of electronic bands (the transition between rotational levels of the different electronic levels) having larger
rotational constant of the upper electronic level than the lower one,
[Question ID = 19617]
1. band head appears in R-branch [Option ID = 48460]
2. band head appears in P-branch [Option ID = 48459]
3. band head appears in Q-branch [Option ID = 48461]
4. no band head appears [Option ID = 48462]
Correct Answer :-
band head appears in P-branch [Option ID = 48459]
In a bistable multivibrator, commutating capacitors are used to
[Question ID = 19610]
1. change the frequency of the output [Option ID = 48433]
2. provide a.c. coupling [Option ID = 48432]
3. increase the base storage output [Option ID = 48434]
4. increase the speed of response [Option ID = 48431]
Correct Answer :-
increase the speed of response [Option ID = 48431]
In the Geiger Muller (GM) region, when the applied voltage is increased, which of the following happens: [Question ID = 19623]
1. The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
2. The pulse amplitude remains nearly constant and the counting rate increases. [Option ID = 48484]
3. Both the pulse amplitude and the counting rate increases. [Option ID = 48485]
4. Both the pulse amplitude and counting rate remain nearly constant. [Option ID = 48486]
Correct Answer :-
The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
In the absorption spectra of harmonic vibrating diatomic oscillator, only one spectral line is observed. It is because [Question ID =
19618]
1. Separation between any two adjacent E-level is same [Option ID = 48465]
2. All other lines are very weak in intensity [Option ID = 48466]
3. Only one molecule is present in a particular E-level [Option ID = 48464]
4. Only one transition is possible from ground E-level to higher E-level [Option ID = 48463]
6)
7)
8)
9)
10)
Correct Answer :-
Separation between any two adjacent E-level is same [Option ID = 48465]
Magnetic field required to bend a non-relativistic charge particle of energy E in an arc of radius R is [Question ID = 19632]
1. [Option ID = 48520]
2. [Option ID = 48521]
3. [Option ID = 48519]
4. [Option ID = 48522]
Correct Answer :-
[Option ID = 48519]
The number of ways in which two particles can be distributed in six states, if the particles are indistinguishable and only one particle
can occupy any one state, is [Question ID = 19612]
1. 31 [Option ID = 48440]
2. 36 [Option ID = 48439]
3. 21 [Option ID = 48442]
4. 25 [Option ID = 48441]
Correct Answer :-
[Question ID = 19635]
1. [Option ID = 48531]
2. [Option ID = 48534]
3. [Option ID = 48532]
4. [Option ID = 48533]
Correct Answer :-
[Option ID = 48531]
[Question ID = 19630]
1. [Option ID = 48512]
2. [Option ID = 48511]
3. [Option ID = 48514]
4. [Option ID = 48513]
Correct Answer :-
[Option ID = 48513]
11)
12)
13)
[Question ID = 19597]
1. [Option ID = 48380]
2. [Option ID = 48382]
3. [Option ID = 48379]
4. [Option ID = 48381]
Correct Answer :-
[Option ID = 48380]
[Question ID = 19615]
1. [Option ID = 48452]
2. [Option ID = 48451]
3. [Option ID = 48453]
4. [Option ID = 48454]
Correct Answer :-
[Option ID = 48451]
[Question ID = 19594]
1. [Option ID = 48368]
2. [Option ID = 48370]
3. [Option ID = 48367]
4. [Option ID = 48369]
Correct Answer :-
[Option ID = 48367]
14)
15)
16)
[Question ID = 19591]
1. [Option ID = 48358]
2. [Option ID = 48356]
3. [Option ID = 48357]
4. [Option ID = 48355]
Correct Answer :-
[Option ID = 48355]
[Question ID = 19599]
1. [Option ID = 48388]
2. [Option ID = 48390]
3. [Option ID = 48387]
4. [Option ID = 48389]
Correct Answer :-
[Option ID = 48390]
[Question ID = 19586]
1. [Option ID = 48335]
2. [Option ID = 48336]
3. [Option ID = 48337]
4. [Option ID = 48338]
Correct Answer :-
[Option ID = 48338]
[Question ID = 19589]
17)
18)
19)
1. [Option ID = 48350]
2. [Option ID = 48348]
3. [Option ID = 48349]
4. [Option ID = 48347]
Correct Answer :-
[Option ID = 48349]
[Question ID = 19596]
1. [Option ID = 48378]
2. [Option ID = 48376]
3. [Option ID = 48377]
4. [Option ID = 48375]
Correct Answer :-
[Question ID = 19614]
1. [Option ID = 48449]
2. [Option ID = 48448]
3. [Option ID = 48450]
4. [Option ID = 48447]
Correct Answer :-
[Option ID = 48447]
[Question ID = 19590]
1. [Option ID = 48351]
2. [Option ID = 48354]
3. [Option ID = 48353]
4. [Option ID = 48352]
20)
21)
22)
Correct Answer :-
[Option ID = 48353]
[Question ID = 19613]
1. [Option ID = 48445]
2. [Option ID = 48443]
3. [Option ID = 48446]
4. [Option ID = 48444]
Correct Answer :-
[Option ID = 48445]
[Question ID = 19625]
1. [Option ID = 48491]
2. [Option ID = 48494]
3. [Option ID = 48492]
4. [Option ID = 48493]
Correct Answer :-
[Option ID = 48492]
[Question ID = 19604]
23)
24)
25)
1. [Option ID = 48407]
2. [Option ID = 48410]
3. [Option ID = 48408]
4. [Option ID = 48409]
Correct Answer :-
[Option ID = 48407]
[Question ID = 19603]
1. [Option ID = 48405]
2. [Option ID = 48406]
3. [Option ID = 48404]
4. [Option ID = 48403]
Correct Answer :-
[Option ID = 48404]
[Question ID = 19627]
1. [Option ID = 48502]
2. [Option ID = 48500]
3. [Option ID = 48499]
4. [Option ID = 48501]
Correct Answer :-
[Option ID = 48501]
[Question ID = 19600]
26)
27)
28)
1. [Option ID = 48394]
2. [Option ID = 48392]
3. [Option ID = 48391]
4. [Option ID = 48393]
Correct Answer :-
[Option ID = 48391]
[Question ID = 19621]
1. [Option ID = 48477]
2. [Option ID = 48475]
3. [Option ID = 48478]
4. [Option ID = 48476]
Correct Answer :-
[Option ID = 48475]
[Question ID = 19587]
1. [Option ID = 48339]
2. [Option ID = 48342]
3. [Option ID = 48340]
4. [Option ID = 48341]
Correct Answer :-
[Option ID = 48341]
[Question ID = 19592]
1. [Option ID = 48361]
2. [Option ID = 48359]
3. [Option ID = 48360]
29)
30)
31)
32)
4. [Option ID = 48362]
Correct Answer :-
[Option ID = 48359]
[Question ID = 19601]
1. [Option ID = 48398]
2. [Option ID = 48395]
3. [Option ID = 48396]
4. [Option ID = 48397]
Correct Answer :-
[Option ID = 48395]
[Question ID = 19628]
1. [Option ID = 48506]
2. [Option ID = 48503]
3. [Option ID = 48505]
4. [Option ID = 48504]
Correct Answer :-
[Option ID = 48503]
[Question ID = 19607]
1. [Option ID = 48421]
2. [Option ID = 48419]
3. [Option ID = 48422]
4. [Option ID = 48420]
Correct Answer :-
33)
34)
35)
[Question ID = 19605]
1. [Option ID = 48412]
2. [Option ID = 48413]
3. [Option ID = 48411]
4. [Option ID = 48414]
Correct Answer :-
[Option ID = 48414]
[Question ID = 19620]
1. [Option ID = 48473]
2. [Option ID = 48472]
3. [Option ID = 48471]
4. [Option ID = 48474]
Correct Answer :-
[Option ID = 48471]
[Question ID = 19629]
1. None of these [Option ID = 48510]
2. [Option ID = 48509]
3. [Option ID = 48507]
4. [Option ID = 48508]
Correct Answer :-
[Option ID = 48509]
[Question ID = 19616]
36)
37)
38)
1. [Option ID = 48457]
2. [Option ID = 48455]
3. [Option ID = 48456]
4. [Option ID = 48458]
Correct Answer :-
[Option ID = 48457]
[Question ID = 19626]
1. [Option ID = 48497]
2. [Option ID = 48496]
3. [Option ID = 48495]
4. [Option ID = 48498]
Correct Answer :-
[Option ID = 48495]
[Question ID = 19602]
1. [Option ID = 48399]
2. [Option ID = 48402]
3. [Option ID = 48401]
4. [Option ID = 48400]
Correct Answer :-
[Option ID = 48399]
[Question ID = 19588]
1. [Option ID = 48345]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
DU PhD in Physics
Topic:- DU_J18_PHD_PHY_Topic01
An infinite long wire carries a time independent current I=1 Ampere. The wire is bent and a semi-circle detour of radius R = 1 cm is
made with the centre at the origin. The magnitude of magnetic field at the origin is
[Question ID = 19633]
1. [Option ID = 48525]
2. [Option ID = 48523]
3. [Option ID = 48524]
4. [Option ID = 48526]
Correct Answer :-
[Option ID = 48524]
In a rotational structure of electronic bands (the transition between rotational levels of the different electronic levels) having larger
rotational constant of the upper electronic level than the lower one,
[Question ID = 19617]
1. band head appears in R-branch [Option ID = 48460]
2. band head appears in P-branch [Option ID = 48459]
3. band head appears in Q-branch [Option ID = 48461]
4. no band head appears [Option ID = 48462]
Correct Answer :-
band head appears in P-branch [Option ID = 48459]
In a bistable multivibrator, commutating capacitors are used to
[Question ID = 19610]
1. change the frequency of the output [Option ID = 48433]
2. provide a.c. coupling [Option ID = 48432]
3. increase the base storage output [Option ID = 48434]
4. increase the speed of response [Option ID = 48431]
Correct Answer :-
increase the speed of response [Option ID = 48431]
In the Geiger Muller (GM) region, when the applied voltage is increased, which of the following happens: [Question ID = 19623]
1. The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
2. The pulse amplitude remains nearly constant and the counting rate increases. [Option ID = 48484]
3. Both the pulse amplitude and the counting rate increases. [Option ID = 48485]
4. Both the pulse amplitude and counting rate remain nearly constant. [Option ID = 48486]
Correct Answer :-
The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
In the absorption spectra of harmonic vibrating diatomic oscillator, only one spectral line is observed. It is because [Question ID =
19618]
1. Separation between any two adjacent E-level is same [Option ID = 48465]
2. All other lines are very weak in intensity [Option ID = 48466]
3. Only one molecule is present in a particular E-level [Option ID = 48464]
4. Only one transition is possible from ground E-level to higher E-level [Option ID = 48463]
6)
7)
8)
9)
10)
Correct Answer :-
Separation between any two adjacent E-level is same [Option ID = 48465]
Magnetic field required to bend a non-relativistic charge particle of energy E in an arc of radius R is [Question ID = 19632]
1. [Option ID = 48520]
2. [Option ID = 48521]
3. [Option ID = 48519]
4. [Option ID = 48522]
Correct Answer :-
[Option ID = 48519]
The number of ways in which two particles can be distributed in six states, if the particles are indistinguishable and only one particle
can occupy any one state, is [Question ID = 19612]
1. 31 [Option ID = 48440]
2. 36 [Option ID = 48439]
3. 21 [Option ID = 48442]
4. 25 [Option ID = 48441]
Correct Answer :-
[Question ID = 19635]
1. [Option ID = 48531]
2. [Option ID = 48534]
3. [Option ID = 48532]
4. [Option ID = 48533]
Correct Answer :-
[Option ID = 48531]
[Question ID = 19630]
1. [Option ID = 48512]
2. [Option ID = 48511]
3. [Option ID = 48514]
4. [Option ID = 48513]
Correct Answer :-
[Option ID = 48513]
11)
12)
13)
[Question ID = 19597]
1. [Option ID = 48380]
2. [Option ID = 48382]
3. [Option ID = 48379]
4. [Option ID = 48381]
Correct Answer :-
[Option ID = 48380]
[Question ID = 19615]
1. [Option ID = 48452]
2. [Option ID = 48451]
3. [Option ID = 48453]
4. [Option ID = 48454]
Correct Answer :-
[Option ID = 48451]
[Question ID = 19594]
1. [Option ID = 48368]
2. [Option ID = 48370]
3. [Option ID = 48367]
4. [Option ID = 48369]
Correct Answer :-
[Option ID = 48367]
14)
15)
16)
[Question ID = 19591]
1. [Option ID = 48358]
2. [Option ID = 48356]
3. [Option ID = 48357]
4. [Option ID = 48355]
Correct Answer :-
[Option ID = 48355]
[Question ID = 19599]
1. [Option ID = 48388]
2. [Option ID = 48390]
3. [Option ID = 48387]
4. [Option ID = 48389]
Correct Answer :-
[Option ID = 48390]
[Question ID = 19586]
1. [Option ID = 48335]
2. [Option ID = 48336]
3. [Option ID = 48337]
4. [Option ID = 48338]
Correct Answer :-
[Option ID = 48338]
[Question ID = 19589]
17)
18)
19)
1. [Option ID = 48350]
2. [Option ID = 48348]
3. [Option ID = 48349]
4. [Option ID = 48347]
Correct Answer :-
[Option ID = 48349]
[Question ID = 19596]
1. [Option ID = 48378]
2. [Option ID = 48376]
3. [Option ID = 48377]
4. [Option ID = 48375]
Correct Answer :-
[Question ID = 19614]
1. [Option ID = 48449]
2. [Option ID = 48448]
3. [Option ID = 48450]
4. [Option ID = 48447]
Correct Answer :-
[Option ID = 48447]
[Question ID = 19590]
1. [Option ID = 48351]
2. [Option ID = 48354]
3. [Option ID = 48353]
4. [Option ID = 48352]
20)
21)
22)
Correct Answer :-
[Option ID = 48353]
[Question ID = 19613]
1. [Option ID = 48445]
2. [Option ID = 48443]
3. [Option ID = 48446]
4. [Option ID = 48444]
Correct Answer :-
[Option ID = 48445]
[Question ID = 19625]
1. [Option ID = 48491]
2. [Option ID = 48494]
3. [Option ID = 48492]
4. [Option ID = 48493]
Correct Answer :-
[Option ID = 48492]
[Question ID = 19604]
23)
24)
25)
1. [Option ID = 48407]
2. [Option ID = 48410]
3. [Option ID = 48408]
4. [Option ID = 48409]
Correct Answer :-
[Option ID = 48407]
[Question ID = 19603]
1. [Option ID = 48405]
2. [Option ID = 48406]
3. [Option ID = 48404]
4. [Option ID = 48403]
Correct Answer :-
[Option ID = 48404]
[Question ID = 19627]
1. [Option ID = 48502]
2. [Option ID = 48500]
3. [Option ID = 48499]
4. [Option ID = 48501]
Correct Answer :-
[Option ID = 48501]
[Question ID = 19600]
26)
27)
28)
1. [Option ID = 48394]
2. [Option ID = 48392]
3. [Option ID = 48391]
4. [Option ID = 48393]
Correct Answer :-
[Option ID = 48391]
[Question ID = 19621]
1. [Option ID = 48477]
2. [Option ID = 48475]
3. [Option ID = 48478]
4. [Option ID = 48476]
Correct Answer :-
[Option ID = 48475]
[Question ID = 19587]
1. [Option ID = 48339]
2. [Option ID = 48342]
3. [Option ID = 48340]
4. [Option ID = 48341]
Correct Answer :-
[Option ID = 48341]
[Question ID = 19592]
1. [Option ID = 48361]
2. [Option ID = 48359]
3. [Option ID = 48360]
29)
30)
31)
32)
4. [Option ID = 48362]
Correct Answer :-
[Option ID = 48359]
[Question ID = 19601]
1. [Option ID = 48398]
2. [Option ID = 48395]
3. [Option ID = 48396]
4. [Option ID = 48397]
Correct Answer :-
[Option ID = 48395]
[Question ID = 19628]
1. [Option ID = 48506]
2. [Option ID = 48503]
3. [Option ID = 48505]
4. [Option ID = 48504]
Correct Answer :-
[Option ID = 48503]
[Question ID = 19607]
1. [Option ID = 48421]
2. [Option ID = 48419]
3. [Option ID = 48422]
4. [Option ID = 48420]
Correct Answer :-
33)
34)
35)
[Question ID = 19605]
1. [Option ID = 48412]
2. [Option ID = 48413]
3. [Option ID = 48411]
4. [Option ID = 48414]
Correct Answer :-
[Option ID = 48414]
[Question ID = 19620]
1. [Option ID = 48473]
2. [Option ID = 48472]
3. [Option ID = 48471]
4. [Option ID = 48474]
Correct Answer :-
[Option ID = 48471]
[Question ID = 19629]
1. None of these [Option ID = 48510]
2. [Option ID = 48509]
3. [Option ID = 48507]
4. [Option ID = 48508]
Correct Answer :-
[Option ID = 48509]
[Question ID = 19616]
36)
37)
38)
1. [Option ID = 48457]
2. [Option ID = 48455]
3. [Option ID = 48456]
4. [Option ID = 48458]
Correct Answer :-
[Option ID = 48457]
[Question ID = 19626]
1. [Option ID = 48497]
2. [Option ID = 48496]
3. [Option ID = 48495]
4. [Option ID = 48498]
Correct Answer :-
[Option ID = 48495]
[Question ID = 19602]
1. [Option ID = 48399]
2. [Option ID = 48402]
3. [Option ID = 48401]
4. [Option ID = 48400]
Correct Answer :-
[Option ID = 48399]
[Question ID = 19588]
1. [Option ID = 48345]
39)
40)
41)
2. [Option ID = 48343]
3. [Option ID = 48344]
4. [Option ID = 48346]
Correct Answer :-
[Option ID = 48343]
[Question ID = 19609]
1. [Option ID = 48430]
2. [Option ID = 48429]
3. [Option ID = 48428]
4. [Option ID = 48427]
Correct Answer :-
[Option ID = 48427]
[Question ID = 19598]
1. [Option ID = 48384]
2. [Option ID = 48385]
3. [Option ID = 48386]
4. [Option ID = 48383]
Correct Answer :-
[Option ID = 48385]
[Question ID = 19606]
1. [Option ID = 48417]
2. [Option ID = 48415]
3. [Option ID = 48416]
4. [Option ID = 48418]
Correct Answer :-
[Option ID = 48415]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
DU PhD in Physics
Topic:- DU_J18_PHD_PHY_Topic01
An infinite long wire carries a time independent current I=1 Ampere. The wire is bent and a semi-circle detour of radius R = 1 cm is
made with the centre at the origin. The magnitude of magnetic field at the origin is
[Question ID = 19633]
1. [Option ID = 48525]
2. [Option ID = 48523]
3. [Option ID = 48524]
4. [Option ID = 48526]
Correct Answer :-
[Option ID = 48524]
In a rotational structure of electronic bands (the transition between rotational levels of the different electronic levels) having larger
rotational constant of the upper electronic level than the lower one,
[Question ID = 19617]
1. band head appears in R-branch [Option ID = 48460]
2. band head appears in P-branch [Option ID = 48459]
3. band head appears in Q-branch [Option ID = 48461]
4. no band head appears [Option ID = 48462]
Correct Answer :-
band head appears in P-branch [Option ID = 48459]
In a bistable multivibrator, commutating capacitors are used to
[Question ID = 19610]
1. change the frequency of the output [Option ID = 48433]
2. provide a.c. coupling [Option ID = 48432]
3. increase the base storage output [Option ID = 48434]
4. increase the speed of response [Option ID = 48431]
Correct Answer :-
increase the speed of response [Option ID = 48431]
In the Geiger Muller (GM) region, when the applied voltage is increased, which of the following happens: [Question ID = 19623]
1. The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
2. The pulse amplitude remains nearly constant and the counting rate increases. [Option ID = 48484]
3. Both the pulse amplitude and the counting rate increases. [Option ID = 48485]
4. Both the pulse amplitude and counting rate remain nearly constant. [Option ID = 48486]
Correct Answer :-
The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
In the absorption spectra of harmonic vibrating diatomic oscillator, only one spectral line is observed. It is because [Question ID =
19618]
1. Separation between any two adjacent E-level is same [Option ID = 48465]
2. All other lines are very weak in intensity [Option ID = 48466]
3. Only one molecule is present in a particular E-level [Option ID = 48464]
4. Only one transition is possible from ground E-level to higher E-level [Option ID = 48463]
6)
7)
8)
9)
10)
Correct Answer :-
Separation between any two adjacent E-level is same [Option ID = 48465]
Magnetic field required to bend a non-relativistic charge particle of energy E in an arc of radius R is [Question ID = 19632]
1. [Option ID = 48520]
2. [Option ID = 48521]
3. [Option ID = 48519]
4. [Option ID = 48522]
Correct Answer :-
[Option ID = 48519]
The number of ways in which two particles can be distributed in six states, if the particles are indistinguishable and only one particle
can occupy any one state, is [Question ID = 19612]
1. 31 [Option ID = 48440]
2. 36 [Option ID = 48439]
3. 21 [Option ID = 48442]
4. 25 [Option ID = 48441]
Correct Answer :-
[Question ID = 19635]
1. [Option ID = 48531]
2. [Option ID = 48534]
3. [Option ID = 48532]
4. [Option ID = 48533]
Correct Answer :-
[Option ID = 48531]
[Question ID = 19630]
1. [Option ID = 48512]
2. [Option ID = 48511]
3. [Option ID = 48514]
4. [Option ID = 48513]
Correct Answer :-
[Option ID = 48513]
11)
12)
13)
[Question ID = 19597]
1. [Option ID = 48380]
2. [Option ID = 48382]
3. [Option ID = 48379]
4. [Option ID = 48381]
Correct Answer :-
[Option ID = 48380]
[Question ID = 19615]
1. [Option ID = 48452]
2. [Option ID = 48451]
3. [Option ID = 48453]
4. [Option ID = 48454]
Correct Answer :-
[Option ID = 48451]
[Question ID = 19594]
1. [Option ID = 48368]
2. [Option ID = 48370]
3. [Option ID = 48367]
4. [Option ID = 48369]
Correct Answer :-
[Option ID = 48367]
14)
15)
16)
[Question ID = 19591]
1. [Option ID = 48358]
2. [Option ID = 48356]
3. [Option ID = 48357]
4. [Option ID = 48355]
Correct Answer :-
[Option ID = 48355]
[Question ID = 19599]
1. [Option ID = 48388]
2. [Option ID = 48390]
3. [Option ID = 48387]
4. [Option ID = 48389]
Correct Answer :-
[Option ID = 48390]
[Question ID = 19586]
1. [Option ID = 48335]
2. [Option ID = 48336]
3. [Option ID = 48337]
4. [Option ID = 48338]
Correct Answer :-
[Option ID = 48338]
[Question ID = 19589]
17)
18)
19)
1. [Option ID = 48350]
2. [Option ID = 48348]
3. [Option ID = 48349]
4. [Option ID = 48347]
Correct Answer :-
[Option ID = 48349]
[Question ID = 19596]
1. [Option ID = 48378]
2. [Option ID = 48376]
3. [Option ID = 48377]
4. [Option ID = 48375]
Correct Answer :-
[Question ID = 19614]
1. [Option ID = 48449]
2. [Option ID = 48448]
3. [Option ID = 48450]
4. [Option ID = 48447]
Correct Answer :-
[Option ID = 48447]
[Question ID = 19590]
1. [Option ID = 48351]
2. [Option ID = 48354]
3. [Option ID = 48353]
4. [Option ID = 48352]
20)
21)
22)
Correct Answer :-
[Option ID = 48353]
[Question ID = 19613]
1. [Option ID = 48445]
2. [Option ID = 48443]
3. [Option ID = 48446]
4. [Option ID = 48444]
Correct Answer :-
[Option ID = 48445]
[Question ID = 19625]
1. [Option ID = 48491]
2. [Option ID = 48494]
3. [Option ID = 48492]
4. [Option ID = 48493]
Correct Answer :-
[Option ID = 48492]
[Question ID = 19604]
23)
24)
25)
1. [Option ID = 48407]
2. [Option ID = 48410]
3. [Option ID = 48408]
4. [Option ID = 48409]
Correct Answer :-
[Option ID = 48407]
[Question ID = 19603]
1. [Option ID = 48405]
2. [Option ID = 48406]
3. [Option ID = 48404]
4. [Option ID = 48403]
Correct Answer :-
[Option ID = 48404]
[Question ID = 19627]
1. [Option ID = 48502]
2. [Option ID = 48500]
3. [Option ID = 48499]
4. [Option ID = 48501]
Correct Answer :-
[Option ID = 48501]
[Question ID = 19600]
26)
27)
28)
1. [Option ID = 48394]
2. [Option ID = 48392]
3. [Option ID = 48391]
4. [Option ID = 48393]
Correct Answer :-
[Option ID = 48391]
[Question ID = 19621]
1. [Option ID = 48477]
2. [Option ID = 48475]
3. [Option ID = 48478]
4. [Option ID = 48476]
Correct Answer :-
[Option ID = 48475]
[Question ID = 19587]
1. [Option ID = 48339]
2. [Option ID = 48342]
3. [Option ID = 48340]
4. [Option ID = 48341]
Correct Answer :-
[Option ID = 48341]
[Question ID = 19592]
1. [Option ID = 48361]
2. [Option ID = 48359]
3. [Option ID = 48360]
29)
30)
31)
32)
4. [Option ID = 48362]
Correct Answer :-
[Option ID = 48359]
[Question ID = 19601]
1. [Option ID = 48398]
2. [Option ID = 48395]
3. [Option ID = 48396]
4. [Option ID = 48397]
Correct Answer :-
[Option ID = 48395]
[Question ID = 19628]
1. [Option ID = 48506]
2. [Option ID = 48503]
3. [Option ID = 48505]
4. [Option ID = 48504]
Correct Answer :-
[Option ID = 48503]
[Question ID = 19607]
1. [Option ID = 48421]
2. [Option ID = 48419]
3. [Option ID = 48422]
4. [Option ID = 48420]
Correct Answer :-
33)
34)
35)
[Question ID = 19605]
1. [Option ID = 48412]
2. [Option ID = 48413]
3. [Option ID = 48411]
4. [Option ID = 48414]
Correct Answer :-
[Option ID = 48414]
[Question ID = 19620]
1. [Option ID = 48473]
2. [Option ID = 48472]
3. [Option ID = 48471]
4. [Option ID = 48474]
Correct Answer :-
[Option ID = 48471]
[Question ID = 19629]
1. None of these [Option ID = 48510]
2. [Option ID = 48509]
3. [Option ID = 48507]
4. [Option ID = 48508]
Correct Answer :-
[Option ID = 48509]
[Question ID = 19616]
36)
37)
38)
1. [Option ID = 48457]
2. [Option ID = 48455]
3. [Option ID = 48456]
4. [Option ID = 48458]
Correct Answer :-
[Option ID = 48457]
[Question ID = 19626]
1. [Option ID = 48497]
2. [Option ID = 48496]
3. [Option ID = 48495]
4. [Option ID = 48498]
Correct Answer :-
[Option ID = 48495]
[Question ID = 19602]
1. [Option ID = 48399]
2. [Option ID = 48402]
3. [Option ID = 48401]
4. [Option ID = 48400]
Correct Answer :-
[Option ID = 48399]
[Question ID = 19588]
1. [Option ID = 48345]
39)
40)
41)
2. [Option ID = 48343]
3. [Option ID = 48344]
4. [Option ID = 48346]
Correct Answer :-
[Option ID = 48343]
[Question ID = 19609]
1. [Option ID = 48430]
2. [Option ID = 48429]
3. [Option ID = 48428]
4. [Option ID = 48427]
Correct Answer :-
[Option ID = 48427]
[Question ID = 19598]
1. [Option ID = 48384]
2. [Option ID = 48385]
3. [Option ID = 48386]
4. [Option ID = 48383]
Correct Answer :-
[Option ID = 48385]
[Question ID = 19606]
1. [Option ID = 48417]
2. [Option ID = 48415]
3. [Option ID = 48416]
4. [Option ID = 48418]
Correct Answer :-
[Option ID = 48415]
42)
43)
44)
45)
[Question ID = 19608]
1. [Option ID = 48425]
2. [Option ID = 48423]
3. [Option ID = 48426]
4. [Option ID = 48424]
Correct Answer :-
[Option ID = 48423]
[Question ID = 19624]
1. [Option ID = 48487]
2. [Option ID = 48488]
3. [Option ID = 48489]
4. [Option ID = 48490]
Correct Answer :-
[Option ID = 48489]
[Question ID = 19593]
1. [Option ID = 48366]
2. [Option ID = 48364]
3. [Option ID = 48365]
4. [Option ID = 48363]
Correct Answer :-
[Option ID = 48365]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
DU PhD in Physics
Topic:- DU_J18_PHD_PHY_Topic01
An infinite long wire carries a time independent current I=1 Ampere. The wire is bent and a semi-circle detour of radius R = 1 cm is
made with the centre at the origin. The magnitude of magnetic field at the origin is
[Question ID = 19633]
1. [Option ID = 48525]
2. [Option ID = 48523]
3. [Option ID = 48524]
4. [Option ID = 48526]
Correct Answer :-
[Option ID = 48524]
In a rotational structure of electronic bands (the transition between rotational levels of the different electronic levels) having larger
rotational constant of the upper electronic level than the lower one,
[Question ID = 19617]
1. band head appears in R-branch [Option ID = 48460]
2. band head appears in P-branch [Option ID = 48459]
3. band head appears in Q-branch [Option ID = 48461]
4. no band head appears [Option ID = 48462]
Correct Answer :-
band head appears in P-branch [Option ID = 48459]
In a bistable multivibrator, commutating capacitors are used to
[Question ID = 19610]
1. change the frequency of the output [Option ID = 48433]
2. provide a.c. coupling [Option ID = 48432]
3. increase the base storage output [Option ID = 48434]
4. increase the speed of response [Option ID = 48431]
Correct Answer :-
increase the speed of response [Option ID = 48431]
In the Geiger Muller (GM) region, when the applied voltage is increased, which of the following happens: [Question ID = 19623]
1. The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
2. The pulse amplitude remains nearly constant and the counting rate increases. [Option ID = 48484]
3. Both the pulse amplitude and the counting rate increases. [Option ID = 48485]
4. Both the pulse amplitude and counting rate remain nearly constant. [Option ID = 48486]
Correct Answer :-
The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
In the absorption spectra of harmonic vibrating diatomic oscillator, only one spectral line is observed. It is because [Question ID =
19618]
1. Separation between any two adjacent E-level is same [Option ID = 48465]
2. All other lines are very weak in intensity [Option ID = 48466]
3. Only one molecule is present in a particular E-level [Option ID = 48464]
4. Only one transition is possible from ground E-level to higher E-level [Option ID = 48463]
6)
7)
8)
9)
10)
Correct Answer :-
Separation between any two adjacent E-level is same [Option ID = 48465]
Magnetic field required to bend a non-relativistic charge particle of energy E in an arc of radius R is [Question ID = 19632]
1. [Option ID = 48520]
2. [Option ID = 48521]
3. [Option ID = 48519]
4. [Option ID = 48522]
Correct Answer :-
[Option ID = 48519]
The number of ways in which two particles can be distributed in six states, if the particles are indistinguishable and only one particle
can occupy any one state, is [Question ID = 19612]
1. 31 [Option ID = 48440]
2. 36 [Option ID = 48439]
3. 21 [Option ID = 48442]
4. 25 [Option ID = 48441]
Correct Answer :-
[Question ID = 19635]
1. [Option ID = 48531]
2. [Option ID = 48534]
3. [Option ID = 48532]
4. [Option ID = 48533]
Correct Answer :-
[Option ID = 48531]
[Question ID = 19630]
1. [Option ID = 48512]
2. [Option ID = 48511]
3. [Option ID = 48514]
4. [Option ID = 48513]
Correct Answer :-
[Option ID = 48513]
11)
12)
13)
[Question ID = 19597]
1. [Option ID = 48380]
2. [Option ID = 48382]
3. [Option ID = 48379]
4. [Option ID = 48381]
Correct Answer :-
[Option ID = 48380]
[Question ID = 19615]
1. [Option ID = 48452]
2. [Option ID = 48451]
3. [Option ID = 48453]
4. [Option ID = 48454]
Correct Answer :-
[Option ID = 48451]
[Question ID = 19594]
1. [Option ID = 48368]
2. [Option ID = 48370]
3. [Option ID = 48367]
4. [Option ID = 48369]
Correct Answer :-
[Option ID = 48367]
14)
15)
16)
[Question ID = 19591]
1. [Option ID = 48358]
2. [Option ID = 48356]
3. [Option ID = 48357]
4. [Option ID = 48355]
Correct Answer :-
[Option ID = 48355]
[Question ID = 19599]
1. [Option ID = 48388]
2. [Option ID = 48390]
3. [Option ID = 48387]
4. [Option ID = 48389]
Correct Answer :-
[Option ID = 48390]
[Question ID = 19586]
1. [Option ID = 48335]
2. [Option ID = 48336]
3. [Option ID = 48337]
4. [Option ID = 48338]
Correct Answer :-
[Option ID = 48338]
[Question ID = 19589]
17)
18)
19)
1. [Option ID = 48350]
2. [Option ID = 48348]
3. [Option ID = 48349]
4. [Option ID = 48347]
Correct Answer :-
[Option ID = 48349]
[Question ID = 19596]
1. [Option ID = 48378]
2. [Option ID = 48376]
3. [Option ID = 48377]
4. [Option ID = 48375]
Correct Answer :-
[Question ID = 19614]
1. [Option ID = 48449]
2. [Option ID = 48448]
3. [Option ID = 48450]
4. [Option ID = 48447]
Correct Answer :-
[Option ID = 48447]
[Question ID = 19590]
1. [Option ID = 48351]
2. [Option ID = 48354]
3. [Option ID = 48353]
4. [Option ID = 48352]
20)
21)
22)
Correct Answer :-
[Option ID = 48353]
[Question ID = 19613]
1. [Option ID = 48445]
2. [Option ID = 48443]
3. [Option ID = 48446]
4. [Option ID = 48444]
Correct Answer :-
[Option ID = 48445]
[Question ID = 19625]
1. [Option ID = 48491]
2. [Option ID = 48494]
3. [Option ID = 48492]
4. [Option ID = 48493]
Correct Answer :-
[Option ID = 48492]
[Question ID = 19604]
23)
24)
25)
1. [Option ID = 48407]
2. [Option ID = 48410]
3. [Option ID = 48408]
4. [Option ID = 48409]
Correct Answer :-
[Option ID = 48407]
[Question ID = 19603]
1. [Option ID = 48405]
2. [Option ID = 48406]
3. [Option ID = 48404]
4. [Option ID = 48403]
Correct Answer :-
[Option ID = 48404]
[Question ID = 19627]
1. [Option ID = 48502]
2. [Option ID = 48500]
3. [Option ID = 48499]
4. [Option ID = 48501]
Correct Answer :-
[Option ID = 48501]
[Question ID = 19600]
26)
27)
28)
1. [Option ID = 48394]
2. [Option ID = 48392]
3. [Option ID = 48391]
4. [Option ID = 48393]
Correct Answer :-
[Option ID = 48391]
[Question ID = 19621]
1. [Option ID = 48477]
2. [Option ID = 48475]
3. [Option ID = 48478]
4. [Option ID = 48476]
Correct Answer :-
[Option ID = 48475]
[Question ID = 19587]
1. [Option ID = 48339]
2. [Option ID = 48342]
3. [Option ID = 48340]
4. [Option ID = 48341]
Correct Answer :-
[Option ID = 48341]
[Question ID = 19592]
1. [Option ID = 48361]
2. [Option ID = 48359]
3. [Option ID = 48360]
29)
30)
31)
32)
4. [Option ID = 48362]
Correct Answer :-
[Option ID = 48359]
[Question ID = 19601]
1. [Option ID = 48398]
2. [Option ID = 48395]
3. [Option ID = 48396]
4. [Option ID = 48397]
Correct Answer :-
[Option ID = 48395]
[Question ID = 19628]
1. [Option ID = 48506]
2. [Option ID = 48503]
3. [Option ID = 48505]
4. [Option ID = 48504]
Correct Answer :-
[Option ID = 48503]
[Question ID = 19607]
1. [Option ID = 48421]
2. [Option ID = 48419]
3. [Option ID = 48422]
4. [Option ID = 48420]
Correct Answer :-
33)
34)
35)
[Question ID = 19605]
1. [Option ID = 48412]
2. [Option ID = 48413]
3. [Option ID = 48411]
4. [Option ID = 48414]
Correct Answer :-
[Option ID = 48414]
[Question ID = 19620]
1. [Option ID = 48473]
2. [Option ID = 48472]
3. [Option ID = 48471]
4. [Option ID = 48474]
Correct Answer :-
[Option ID = 48471]
[Question ID = 19629]
1. None of these [Option ID = 48510]
2. [Option ID = 48509]
3. [Option ID = 48507]
4. [Option ID = 48508]
Correct Answer :-
[Option ID = 48509]
[Question ID = 19616]
36)
37)
38)
1. [Option ID = 48457]
2. [Option ID = 48455]
3. [Option ID = 48456]
4. [Option ID = 48458]
Correct Answer :-
[Option ID = 48457]
[Question ID = 19626]
1. [Option ID = 48497]
2. [Option ID = 48496]
3. [Option ID = 48495]
4. [Option ID = 48498]
Correct Answer :-
[Option ID = 48495]
[Question ID = 19602]
1. [Option ID = 48399]
2. [Option ID = 48402]
3. [Option ID = 48401]
4. [Option ID = 48400]
Correct Answer :-
[Option ID = 48399]
[Question ID = 19588]
1. [Option ID = 48345]
39)
40)
41)
2. [Option ID = 48343]
3. [Option ID = 48344]
4. [Option ID = 48346]
Correct Answer :-
[Option ID = 48343]
[Question ID = 19609]
1. [Option ID = 48430]
2. [Option ID = 48429]
3. [Option ID = 48428]
4. [Option ID = 48427]
Correct Answer :-
[Option ID = 48427]
[Question ID = 19598]
1. [Option ID = 48384]
2. [Option ID = 48385]
3. [Option ID = 48386]
4. [Option ID = 48383]
Correct Answer :-
[Option ID = 48385]
[Question ID = 19606]
1. [Option ID = 48417]
2. [Option ID = 48415]
3. [Option ID = 48416]
4. [Option ID = 48418]
Correct Answer :-
[Option ID = 48415]
42)
43)
44)
45)
[Question ID = 19608]
1. [Option ID = 48425]
2. [Option ID = 48423]
3. [Option ID = 48426]
4. [Option ID = 48424]
Correct Answer :-
[Option ID = 48423]
[Question ID = 19624]
1. [Option ID = 48487]
2. [Option ID = 48488]
3. [Option ID = 48489]
4. [Option ID = 48490]
Correct Answer :-
[Option ID = 48489]
[Question ID = 19593]
1. [Option ID = 48366]
2. [Option ID = 48364]
3. [Option ID = 48365]
4. [Option ID = 48363]
Correct Answer :-
[Option ID = 48365]
46)
47)
48)
49)
[Question ID = 19595]
1. [Option ID = 48372]
2. [Option ID = 48374]
3. [Option ID = 48371]
4. [Option ID = 48373]
Correct Answer :-
[Option ID = 48371]
For a Geiger Muller (GM) Counter experiment, which of the following statement is true?
[Question ID = 19622]
1. GM counter cannot detect gamma-rays [Option ID = 48482]
2. GM counter can measure the energy of the both the beta and gamma-rays [Option ID = 48481]
3. GM Counter cannot discriminate between beta rays and gamma rays [Option ID = 48479]
4. Efficiency of the GM counter for gamma rays is more than that for beta rays. [Option ID = 48480]
Correct Answer :-
GM Counter cannot discriminate between beta rays and gamma rays [Option ID = 48479]
For the molecules of an ideal gas the ratio of most probable speed to average speed to root mean square velocity is given by
[Question ID = 19611]
1. [Option ID = 48438]
2. [Option ID = 48437]
3. [Option ID = 48436]
4. [Option ID = 48435]
Correct Answer :-
[Option ID = 48435]
Consider an atom in a flame emitting in optical wavelengths. What would the typical Doppler broadening of a line be? [Question ID =
19619]
1. [Option ID = 48467]
2. [Option ID = 48470]
3. [Option ID = 48469]
4. [Option ID = 48468]
Correct Answer :-
[Option ID = 48468]
Which of the following equation is not gauge invariant? [Question ID = 19631]
1. [Option ID = 48517]
FirstRanker.com - FirstRanker's Choice
1)
2)
3)
4)
5)
DU PhD in Physics
Topic:- DU_J18_PHD_PHY_Topic01
An infinite long wire carries a time independent current I=1 Ampere. The wire is bent and a semi-circle detour of radius R = 1 cm is
made with the centre at the origin. The magnitude of magnetic field at the origin is
[Question ID = 19633]
1. [Option ID = 48525]
2. [Option ID = 48523]
3. [Option ID = 48524]
4. [Option ID = 48526]
Correct Answer :-
[Option ID = 48524]
In a rotational structure of electronic bands (the transition between rotational levels of the different electronic levels) having larger
rotational constant of the upper electronic level than the lower one,
[Question ID = 19617]
1. band head appears in R-branch [Option ID = 48460]
2. band head appears in P-branch [Option ID = 48459]
3. band head appears in Q-branch [Option ID = 48461]
4. no band head appears [Option ID = 48462]
Correct Answer :-
band head appears in P-branch [Option ID = 48459]
In a bistable multivibrator, commutating capacitors are used to
[Question ID = 19610]
1. change the frequency of the output [Option ID = 48433]
2. provide a.c. coupling [Option ID = 48432]
3. increase the base storage output [Option ID = 48434]
4. increase the speed of response [Option ID = 48431]
Correct Answer :-
increase the speed of response [Option ID = 48431]
In the Geiger Muller (GM) region, when the applied voltage is increased, which of the following happens: [Question ID = 19623]
1. The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
2. The pulse amplitude remains nearly constant and the counting rate increases. [Option ID = 48484]
3. Both the pulse amplitude and the counting rate increases. [Option ID = 48485]
4. Both the pulse amplitude and counting rate remain nearly constant. [Option ID = 48486]
Correct Answer :-
The pulse amplitude increases but the counting rate remains nearly constant. [Option ID = 48483]
In the absorption spectra of harmonic vibrating diatomic oscillator, only one spectral line is observed. It is because [Question ID =
19618]
1. Separation between any two adjacent E-level is same [Option ID = 48465]
2. All other lines are very weak in intensity [Option ID = 48466]
3. Only one molecule is present in a particular E-level [Option ID = 48464]
4. Only one transition is possible from ground E-level to higher E-level [Option ID = 48463]
6)
7)
8)
9)
10)
Correct Answer :-
Separation between any two adjacent E-level is same [Option ID = 48465]
Magnetic field required to bend a non-relativistic charge particle of energy E in an arc of radius R is [Question ID = 19632]
1. [Option ID = 48520]
2. [Option ID = 48521]
3. [Option ID = 48519]
4. [Option ID = 48522]
Correct Answer :-
[Option ID = 48519]
The number of ways in which two particles can be distributed in six states, if the particles are indistinguishable and only one particle
can occupy any one state, is [Question ID = 19612]
1. 31 [Option ID = 48440]
2. 36 [Option ID = 48439]
3. 21 [Option ID = 48442]
4. 25 [Option ID = 48441]
Correct Answer :-
[Question ID = 19635]
1. [Option ID = 48531]
2. [Option ID = 48534]
3. [Option ID = 48532]
4. [Option ID = 48533]
Correct Answer :-
[Option ID = 48531]
[Question ID = 19630]
1. [Option ID = 48512]
2. [Option ID = 48511]
3. [Option ID = 48514]
4. [Option ID = 48513]
Correct Answer :-
[Option ID = 48513]
11)
12)
13)
[Question ID = 19597]
1. [Option ID = 48380]
2. [Option ID = 48382]
3. [Option ID = 48379]
4. [Option ID = 48381]
Correct Answer :-
[Option ID = 48380]
[Question ID = 19615]
1. [Option ID = 48452]
2. [Option ID = 48451]
3. [Option ID = 48453]
4. [Option ID = 48454]
Correct Answer :-
[Option ID = 48451]
[Question ID = 19594]
1. [Option ID = 48368]
2. [Option ID = 48370]
3. [Option ID = 48367]
4. [Option ID = 48369]
Correct Answer :-
[Option ID = 48367]
14)
15)
16)
[Question ID = 19591]
1. [Option ID = 48358]
2. [Option ID = 48356]
3. [Option ID = 48357]
4. [Option ID = 48355]
Correct Answer :-
[Option ID = 48355]
[Question ID = 19599]
1. [Option ID = 48388]
2. [Option ID = 48390]
3. [Option ID = 48387]
4. [Option ID = 48389]
Correct Answer :-
[Option ID = 48390]
[Question ID = 19586]
1. [Option ID = 48335]
2. [Option ID = 48336]
3. [Option ID = 48337]
4. [Option ID = 48338]
Correct Answer :-
[Option ID = 48338]
[Question ID = 19589]
17)
18)
19)
1. [Option ID = 48350]
2. [Option ID = 48348]
3. [Option ID = 48349]
4. [Option ID = 48347]
Correct Answer :-
[Option ID = 48349]
[Question ID = 19596]
1. [Option ID = 48378]
2. [Option ID = 48376]
3. [Option ID = 48377]
4. [Option ID = 48375]
Correct Answer :-
[Question ID = 19614]
1. [Option ID = 48449]
2. [Option ID = 48448]
3. [Option ID = 48450]
4. [Option ID = 48447]
Correct Answer :-
[Option ID = 48447]
[Question ID = 19590]
1. [Option ID = 48351]
2. [Option ID = 48354]
3. [Option ID = 48353]
4. [Option ID = 48352]
20)
21)
22)
Correct Answer :-
[Option ID = 48353]
[Question ID = 19613]
1. [Option ID = 48445]
2. [Option ID = 48443]
3. [Option ID = 48446]
4. [Option ID = 48444]
Correct Answer :-
[Option ID = 48445]
[Question ID = 19625]
1. [Option ID = 48491]
2. [Option ID = 48494]
3. [Option ID = 48492]
4. [Option ID = 48493]
Correct Answer :-
[Option ID = 48492]
[Question ID = 19604]
23)
24)
25)
1. [Option ID = 48407]
2. [Option ID = 48410]
3. [Option ID = 48408]
4. [Option ID = 48409]
Correct Answer :-
[Option ID = 48407]
[Question ID = 19603]
1. [Option ID = 48405]
2. [Option ID = 48406]
3. [Option ID = 48404]
4. [Option ID = 48403]
Correct Answer :-
[Option ID = 48404]
[Question ID = 19627]
1. [Option ID = 48502]
2. [Option ID = 48500]
3. [Option ID = 48499]
4. [Option ID = 48501]
Correct Answer :-
[Option ID = 48501]
[Question ID = 19600]
26)
27)
28)
1. [Option ID = 48394]
2. [Option ID = 48392]
3. [Option ID = 48391]
4. [Option ID = 48393]
Correct Answer :-
[Option ID = 48391]
[Question ID = 19621]
1. [Option ID = 48477]
2. [Option ID = 48475]
3. [Option ID = 48478]
4. [Option ID = 48476]
Correct Answer :-
[Option ID = 48475]
[Question ID = 19587]
1. [Option ID = 48339]
2. [Option ID = 48342]
3. [Option ID = 48340]
4. [Option ID = 48341]
Correct Answer :-
[Option ID = 48341]
[Question ID = 19592]
1. [Option ID = 48361]
2. [Option ID = 48359]
3. [Option ID = 48360]
29)
30)
31)
32)
4. [Option ID = 48362]
Correct Answer :-
[Option ID = 48359]
[Question ID = 19601]
1. [Option ID = 48398]
2. [Option ID = 48395]
3. [Option ID = 48396]
4. [Option ID = 48397]
Correct Answer :-
[Option ID = 48395]
[Question ID = 19628]
1. [Option ID = 48506]
2. [Option ID = 48503]
3. [Option ID = 48505]
4. [Option ID = 48504]
Correct Answer :-
[Option ID = 48503]
[Question ID = 19607]
1. [Option ID = 48421]
2. [Option ID = 48419]
3. [Option ID = 48422]
4. [Option ID = 48420]
Correct Answer :-
33)
34)
35)
[Question ID = 19605]
1. [Option ID = 48412]
2. [Option ID = 48413]
3. [Option ID = 48411]
4. [Option ID = 48414]
Correct Answer :-
[Option ID = 48414]
[Question ID = 19620]
1. [Option ID = 48473]
2. [Option ID = 48472]
3. [Option ID = 48471]
4. [Option ID = 48474]
Correct Answer :-
[Option ID = 48471]
[Question ID = 19629]
1. None of these [Option ID = 48510]
2. [Option ID = 48509]
3. [Option ID = 48507]
4. [Option ID = 48508]
Correct Answer :-
[Option ID = 48509]
[Question ID = 19616]
36)
37)
38)
1. [Option ID = 48457]
2. [Option ID = 48455]
3. [Option ID = 48456]
4. [Option ID = 48458]
Correct Answer :-
[Option ID = 48457]
[Question ID = 19626]
1. [Option ID = 48497]
2. [Option ID = 48496]
3. [Option ID = 48495]
4. [Option ID = 48498]
Correct Answer :-
[Option ID = 48495]
[Question ID = 19602]
1. [Option ID = 48399]
2. [Option ID = 48402]
3. [Option ID = 48401]
4. [Option ID = 48400]
Correct Answer :-
[Option ID = 48399]
[Question ID = 19588]
1. [Option ID = 48345]
39)
40)
41)
2. [Option ID = 48343]
3. [Option ID = 48344]
4. [Option ID = 48346]
Correct Answer :-
[Option ID = 48343]
[Question ID = 19609]
1. [Option ID = 48430]
2. [Option ID = 48429]
3. [Option ID = 48428]
4. [Option ID = 48427]
Correct Answer :-
[Option ID = 48427]
[Question ID = 19598]
1. [Option ID = 48384]
2. [Option ID = 48385]
3. [Option ID = 48386]
4. [Option ID = 48383]
Correct Answer :-
[Option ID = 48385]
[Question ID = 19606]
1. [Option ID = 48417]
2. [Option ID = 48415]
3. [Option ID = 48416]
4. [Option ID = 48418]
Correct Answer :-
[Option ID = 48415]
42)
43)
44)
45)
[Question ID = 19608]
1. [Option ID = 48425]
2. [Option ID = 48423]
3. [Option ID = 48426]
4. [Option ID = 48424]
Correct Answer :-
[Option ID = 48423]
[Question ID = 19624]
1. [Option ID = 48487]
2. [Option ID = 48488]
3. [Option ID = 48489]
4. [Option ID = 48490]
Correct Answer :-
[Option ID = 48489]
[Question ID = 19593]
1. [Option ID = 48366]
2. [Option ID = 48364]
3. [Option ID = 48365]
4. [Option ID = 48363]
Correct Answer :-
[Option ID = 48365]
46)
47)
48)
49)
[Question ID = 19595]
1. [Option ID = 48372]
2. [Option ID = 48374]
3. [Option ID = 48371]
4. [Option ID = 48373]
Correct Answer :-
[Option ID = 48371]
For a Geiger Muller (GM) Counter experiment, which of the following statement is true?
[Question ID = 19622]
1. GM counter cannot detect gamma-rays [Option ID = 48482]
2. GM counter can measure the energy of the both the beta and gamma-rays [Option ID = 48481]
3. GM Counter cannot discriminate between beta rays and gamma rays [Option ID = 48479]
4. Efficiency of the GM counter for gamma rays is more than that for beta rays. [Option ID = 48480]
Correct Answer :-
GM Counter cannot discriminate between beta rays and gamma rays [Option ID = 48479]
For the molecules of an ideal gas the ratio of most probable speed to average speed to root mean square velocity is given by
[Question ID = 19611]
1. [Option ID = 48438]
2. [Option ID = 48437]
3. [Option ID = 48436]
4. [Option ID = 48435]
Correct Answer :-
[Option ID = 48435]
Consider an atom in a flame emitting in optical wavelengths. What would the typical Doppler broadening of a line be? [Question ID =
19619]
1. [Option ID = 48467]
2. [Option ID = 48470]
3. [Option ID = 48469]
4. [Option ID = 48468]
Correct Answer :-
[Option ID = 48468]
Which of the following equation is not gauge invariant? [Question ID = 19631]
1. [Option ID = 48517]
50)
2. [Option ID = 48518]
3. [Option ID = 48516]
4. [Option ID = 48515]
Correct Answer :-
[Option ID = 48515]
A small mass m with a charge q is attached to a spring constant k and allowed to oscillate with amplitude A . Assuming that the
amplitude of the oscillations and the speed of the mass is small, the time averaged power radiated by the system is
[Question ID = 19634]
1. [Option ID = 48529]
2. [Option ID = 48527]
3. [Option ID = 48530]
4. [Option ID = 48528]
Correct Answer :-
[Option ID = 48530]
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This post was last modified on 29 January 2020