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