Download PTU First MSE All Sections Question Bank

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MST-I

Subject Name:-Physics (BSC-18101) Max. Marks: 24
Section:- CE12,CE56 Semester-2

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nd
Time: 90 Minutes

Note:- (i) All questions are compulsory.
(ii) Marks for each question are shown in the brackets.

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(iii) Use of calculator is allowed.

Q.1. Write Maxwell?s Electromagnetic equations for vacuum. (2)

Q.2. What makes laser light different from normal? (2)

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Q.3. A step-index fiber has a core index of refraction 1.425.
The cut-off angle for light entering the fiber from air is found to be 8.50
o
.

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(a) What is the numerical aperture of the fiber?
(b) What is the index of refraction of its cladding?
(c) Find the Fractional Refractive Index change.
(d) If the fiber were submersed in water, what would be the new
cut-off angle at the launching end of fiber? (4)

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Q.4. Explain the working of a Continuous Wave (CW) laser. (4)

Q.5. Derive Maxwell?s Electromagnetic equation from Faraday?s Law of EM
Induction. (4)

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Q.6. (a) Write the statements of Gauss Divergence Theorem and Stoke?s Curl
Theorem. (2)
(b) Give brief significance of Einstein coefficients and show how they are related. (3)
(c) What causes most fiber optic attenuation and propagation losses? (3)

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MST-I

Subject Name:-Physics (BSC-18101) Max. Marks: 24

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Section:- CE12,CE56 Semester-2
nd
Time: 90 Minutes

Note:- (i) All questions are compulsory.

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(ii) Marks for each question are shown in the brackets.
(iii) Use of calculator is allowed.

Q.1. Write Maxwell?s Electromagnetic equations for vacuum. (2)

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Q.2. What makes laser light different from normal? (2)

Q.3. A step-index fiber has a core index of refraction 1.425.
The cut-off angle for light entering the fiber from air is found to be 8.50
o

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.
(a) What is the numerical aperture of the fiber?
(b) What is the index of refraction of its cladding?
(c) Find the Fractional Refractive Index change.
(d) If the fiber were submersed in water, what would be the new

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cut-off angle at the launching end of fiber? (4)

Q.4. Explain the working of a Continuous Wave (CW) laser. (4)

Q.5. Derive Maxwell?s Electromagnetic equation from Faraday?s Law of EM

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Induction. (4)

Q.6. (a) Write the statements of Gauss Divergence Theorem and Stoke?s Curl
Theorem. (2)
(b) Give brief significance of Einstein coefficients and show how they are related. (3)

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(c) What causes most fiber optic attenuation and propagation losses? (3)

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Department of Applied Sciences
Program B.Tech.(ME1,ME2,
ME5,ME6 )

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Semester 2
Subject Code BSC-18101 Subject Title Engg. Physics
Mid Semester Test (MST)
No.
1 Course

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Coordinator(s)
Dr Harpreet Kaur Grewal
Max. Marks 24 Time Duration 1 hour 30 minutes
Date of MST 23
rd

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February,
2019
Roll Number

Note: Attempt all questions

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Q. No. Question Marks
Q1 Differentiate Stimulated Emission and Spontaneous emission? 2
Q2 In LASER, in place of ?A?, it should be ?O? Why? 2
Q3 Explain the terms Acceptance angle and Figure of Merit. What do you
mean by single mode and multimode fiber?

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4
Q4 An optical fiber has NA of 0.15 and cladding refractive index is equal to
1.50.Find NA of the fiber in a liquid of refractive index 1.30.
4
Q5 Discuss the variation of Fermi Level with temperature for extrinsic

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semiconductor.
4
Q6 (a) Explain the energy level diagram of He- Ne Laser and what is
the role of helium in He-Ne Laser?

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(b) What do you mean by Extrinsic Semiconductor?
6

2

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MST-I

Subject Name:-Physics (BSC-18101) Max. Marks: 24

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Section:- CE12,CE56 Semester-2
nd
Time: 90 Minutes

Note:- (i) All questions are compulsory.

--- Content provided by FirstRanker.com ---

(ii) Marks for each question are shown in the brackets.
(iii) Use of calculator is allowed.

Q.1. Write Maxwell?s Electromagnetic equations for vacuum. (2)

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Q.2. What makes laser light different from normal? (2)

Q.3. A step-index fiber has a core index of refraction 1.425.
The cut-off angle for light entering the fiber from air is found to be 8.50
o

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.
(a) What is the numerical aperture of the fiber?
(b) What is the index of refraction of its cladding?
(c) Find the Fractional Refractive Index change.
(d) If the fiber were submersed in water, what would be the new

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cut-off angle at the launching end of fiber? (4)

Q.4. Explain the working of a Continuous Wave (CW) laser. (4)

Q.5. Derive Maxwell?s Electromagnetic equation from Faraday?s Law of EM

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Induction. (4)

Q.6. (a) Write the statements of Gauss Divergence Theorem and Stoke?s Curl
Theorem. (2)
(b) Give brief significance of Einstein coefficients and show how they are related. (3)

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(c) What causes most fiber optic attenuation and propagation losses? (3)

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FirstRanker.com FirstRanker.com, FirstRanker.com
Department of Applied Sciences
Program B.Tech.(ME1,ME2,
ME5,ME6 )

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Semester 2
Subject Code BSC-18101 Subject Title Engg. Physics
Mid Semester Test (MST)
No.
1 Course

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Coordinator(s)
Dr Harpreet Kaur Grewal
Max. Marks 24 Time Duration 1 hour 30 minutes
Date of MST 23
rd

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February,
2019
Roll Number

Note: Attempt all questions

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Q. No. Question Marks
Q1 Differentiate Stimulated Emission and Spontaneous emission? 2
Q2 In LASER, in place of ?A?, it should be ?O? Why? 2
Q3 Explain the terms Acceptance angle and Figure of Merit. What do you
mean by single mode and multimode fiber?

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4
Q4 An optical fiber has NA of 0.15 and cladding refractive index is equal to
1.50.Find NA of the fiber in a liquid of refractive index 1.30.
4
Q5 Discuss the variation of Fermi Level with temperature for extrinsic

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semiconductor.
4
Q6 (a) Explain the energy level diagram of He- Ne Laser and what is
the role of helium in He-Ne Laser?

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(b) What do you mean by Extrinsic Semiconductor?
6

2

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MST-I

Subject Name:-Physics (BSC-18101) Max. Marks: 24
Section:- PE12 Semester-2

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nd
Time: 90 Minutes

Note:- (i) All questions are compulsory.
(ii) Marks for each question are shown in the brackets.

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(iii) Use of calculator is allowed.


Q.1. What is meant by Inverted Population in laser? (2)

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Q.2. Calculate the de-Broglie wavelength of a virus particle
accelerated by a potential difference of 30,000V. (2)

Q.3. Describe the construction and working of Helium Neon laser. (4)

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Q.4. Show that how group velocity is related to phase velocity. (4)

Q.5. Write a note on attenuation & propagation loss mechanisms in
fibres. (4)

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Q.6. (i) Define acceptance angle for an optical fibre. Show that it is
related to numerical aperture. (5)
(ii) An optics fibre is made of glass with refractive index 1.55 and is
clad with another glass of refractive index 1.51. The fibre has a core
of diameter 50?m and is used at a light wavelength of 0.8 ?m.

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Determine:
(a) Numerical aperture (b) Acceptance angle (c) V-number for the
fiber. (3)

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MST-I

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Subject Name:-Physics (BSC-18101) Max. Marks: 24
Section:- CE12,CE56 Semester-2
nd
Time: 90 Minutes

--- Content provided by FirstRanker.com ---

Note:- (i) All questions are compulsory.
(ii) Marks for each question are shown in the brackets.
(iii) Use of calculator is allowed.

--- Content provided by FirstRanker.com ---

Q.1. Write Maxwell?s Electromagnetic equations for vacuum. (2)

Q.2. What makes laser light different from normal? (2)

Q.3. A step-index fiber has a core index of refraction 1.425.

--- Content provided by FirstRanker.com ---

The cut-off angle for light entering the fiber from air is found to be 8.50
o
.
(a) What is the numerical aperture of the fiber?
(b) What is the index of refraction of its cladding?

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(c) Find the Fractional Refractive Index change.
(d) If the fiber were submersed in water, what would be the new
cut-off angle at the launching end of fiber? (4)

Q.4. Explain the working of a Continuous Wave (CW) laser. (4)

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Q.5. Derive Maxwell?s Electromagnetic equation from Faraday?s Law of EM
Induction. (4)

Q.6. (a) Write the statements of Gauss Divergence Theorem and Stoke?s Curl

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Theorem. (2)
(b) Give brief significance of Einstein coefficients and show how they are related. (3)
(c) What causes most fiber optic attenuation and propagation losses? (3)

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FirstRanker.com FirstRanker.com, FirstRanker.com
Department of Applied Sciences

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Program B.Tech.(ME1,ME2,
ME5,ME6 )
Semester 2
Subject Code BSC-18101 Subject Title Engg. Physics
Mid Semester Test (MST)

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No.
1 Course
Coordinator(s)
Dr Harpreet Kaur Grewal
Max. Marks 24 Time Duration 1 hour 30 minutes

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Date of MST 23
rd
February,
2019
Roll Number

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Note: Attempt all questions
Q. No. Question Marks
Q1 Differentiate Stimulated Emission and Spontaneous emission? 2
Q2 In LASER, in place of ?A?, it should be ?O? Why? 2

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Q3 Explain the terms Acceptance angle and Figure of Merit. What do you
mean by single mode and multimode fiber?
4
Q4 An optical fiber has NA of 0.15 and cladding refractive index is equal to
1.50.Find NA of the fiber in a liquid of refractive index 1.30.

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4
Q5 Discuss the variation of Fermi Level with temperature for extrinsic
semiconductor.
4
Q6 (a) Explain the energy level diagram of He- Ne Laser and what is

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the role of helium in He-Ne Laser?

(b) What do you mean by Extrinsic Semiconductor?
6

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2

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MST-I

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Subject Name:-Physics (BSC-18101) Max. Marks: 24
Section:- PE12 Semester-2
nd
Time: 90 Minutes

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Note:- (i) All questions are compulsory.
(ii) Marks for each question are shown in the brackets.
(iii) Use of calculator is allowed.

--- Content provided by FirstRanker.com ---

Q.1. What is meant by Inverted Population in laser? (2)

Q.2. Calculate the de-Broglie wavelength of a virus particle
accelerated by a potential difference of 30,000V. (2)

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Q.3. Describe the construction and working of Helium Neon laser. (4)

Q.4. Show that how group velocity is related to phase velocity. (4)

Q.5. Write a note on attenuation & propagation loss mechanisms in

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fibres. (4)

Q.6. (i) Define acceptance angle for an optical fibre. Show that it is
related to numerical aperture. (5)
(ii) An optics fibre is made of glass with refractive index 1.55 and is

--- Content provided by FirstRanker.com ---

clad with another glass of refractive index 1.51. The fibre has a core
of diameter 50?m and is used at a light wavelength of 0.8 ?m.
Determine:
(a) Numerical aperture (b) Acceptance angle (c) V-number for the
fiber. (3)

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Department of Applied Sciences
Program B.Tech.(CE34 ) Semester 2
Subject Code BSC-18101 Subject Title Physics
Mid Semester Test (MST)
No.

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1 Course
Coordinator(s)
Subject Expert
Dr Harpreet Kaur Grewal

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Dr Randhir Singh
Max. Marks 24 Time Duration 1 hour 30 minutes
Date of MST 23
rd
Feb, 2019 Roll Number

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Note: Attempt all questions
Q. No. Question Marks
Q1
A vector field is given as : k yz i xy A

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? ?
+ =
?
. Find
? ?

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? ? A and tell whether
the field is conservative or not.

2
Q2 Define Poynting vector. Give its significance.

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2
Q3 Define Meissner effect and differentiate type-I, type-II superconductors.

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4
Q4 Derive London equations and give their significance.


4

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Q5 The critical magnetic field for a superconductor at absolute zero is
1 4
10 9
- ? Am and at 6K is
1 4

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10 5
- ? Am . Find the critical temperature and
energy required to break Cooper pair at absolute zero.

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4
Q6 (i) Show that for plane electromagnetic waves propagating in
vacuum, electric field is perpendicular to magnetic field as

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well as to direction of propagation.

(ii) Write Maxwell?s equations and give their significance.
5

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3

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MST-I

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Subject Name:-Physics (BSC-18101) Max. Marks: 24
Section:- CE12,CE56 Semester-2
nd
Time: 90 Minutes

--- Content provided by FirstRanker.com ---

Note:- (i) All questions are compulsory.
(ii) Marks for each question are shown in the brackets.
(iii) Use of calculator is allowed.

--- Content provided by FirstRanker.com ---

Q.1. Write Maxwell?s Electromagnetic equations for vacuum. (2)

Q.2. What makes laser light different from normal? (2)

Q.3. A step-index fiber has a core index of refraction 1.425.

--- Content provided by FirstRanker.com ---

The cut-off angle for light entering the fiber from air is found to be 8.50
o
.
(a) What is the numerical aperture of the fiber?
(b) What is the index of refraction of its cladding?

--- Content provided by FirstRanker.com ---

(c) Find the Fractional Refractive Index change.
(d) If the fiber were submersed in water, what would be the new
cut-off angle at the launching end of fiber? (4)

Q.4. Explain the working of a Continuous Wave (CW) laser. (4)

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Q.5. Derive Maxwell?s Electromagnetic equation from Faraday?s Law of EM
Induction. (4)

Q.6. (a) Write the statements of Gauss Divergence Theorem and Stoke?s Curl

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Theorem. (2)
(b) Give brief significance of Einstein coefficients and show how they are related. (3)
(c) What causes most fiber optic attenuation and propagation losses? (3)

--- Content provided by FirstRanker.com ---

FirstRanker.com FirstRanker.com, FirstRanker.com
Department of Applied Sciences

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Program B.Tech.(ME1,ME2,
ME5,ME6 )
Semester 2
Subject Code BSC-18101 Subject Title Engg. Physics
Mid Semester Test (MST)

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No.
1 Course
Coordinator(s)
Dr Harpreet Kaur Grewal
Max. Marks 24 Time Duration 1 hour 30 minutes

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Date of MST 23
rd
February,
2019
Roll Number

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Note: Attempt all questions
Q. No. Question Marks
Q1 Differentiate Stimulated Emission and Spontaneous emission? 2
Q2 In LASER, in place of ?A?, it should be ?O? Why? 2

--- Content provided by FirstRanker.com ---

Q3 Explain the terms Acceptance angle and Figure of Merit. What do you
mean by single mode and multimode fiber?
4
Q4 An optical fiber has NA of 0.15 and cladding refractive index is equal to
1.50.Find NA of the fiber in a liquid of refractive index 1.30.

--- Content provided by FirstRanker.com ---

4
Q5 Discuss the variation of Fermi Level with temperature for extrinsic
semiconductor.
4
Q6 (a) Explain the energy level diagram of He- Ne Laser and what is

--- Content provided by FirstRanker.com ---

the role of helium in He-Ne Laser?

(b) What do you mean by Extrinsic Semiconductor?
6

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2

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MST-I

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Subject Name:-Physics (BSC-18101) Max. Marks: 24
Section:- PE12 Semester-2
nd
Time: 90 Minutes

--- Content provided by FirstRanker.com ---

Note:- (i) All questions are compulsory.
(ii) Marks for each question are shown in the brackets.
(iii) Use of calculator is allowed.

--- Content provided by FirstRanker.com ---

Q.1. What is meant by Inverted Population in laser? (2)

Q.2. Calculate the de-Broglie wavelength of a virus particle
accelerated by a potential difference of 30,000V. (2)

--- Content provided by FirstRanker.com ---

Q.3. Describe the construction and working of Helium Neon laser. (4)

Q.4. Show that how group velocity is related to phase velocity. (4)

Q.5. Write a note on attenuation & propagation loss mechanisms in

--- Content provided by FirstRanker.com ---

fibres. (4)

Q.6. (i) Define acceptance angle for an optical fibre. Show that it is
related to numerical aperture. (5)
(ii) An optics fibre is made of glass with refractive index 1.55 and is

--- Content provided by FirstRanker.com ---

clad with another glass of refractive index 1.51. The fibre has a core
of diameter 50?m and is used at a light wavelength of 0.8 ?m.
Determine:
(a) Numerical aperture (b) Acceptance angle (c) V-number for the
fiber. (3)

--- Content provided by FirstRanker.com ---

FirstRanker.com FirstRanker.com, FirstRanker.com

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Department of Applied Sciences
Program B.Tech.(CE34 ) Semester 2
Subject Code BSC-18101 Subject Title Physics
Mid Semester Test (MST)
No.

--- Content provided by FirstRanker.com ---

1 Course
Coordinator(s)
Subject Expert
Dr Harpreet Kaur Grewal

--- Content provided by FirstRanker.com ---

Dr Randhir Singh
Max. Marks 24 Time Duration 1 hour 30 minutes
Date of MST 23
rd
Feb, 2019 Roll Number

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Note: Attempt all questions
Q. No. Question Marks
Q1
A vector field is given as : k yz i xy A

--- Content provided by FirstRanker.com ---

? ?
+ =
?
. Find
? ?

--- Content provided by FirstRanker.com ---

? ? A and tell whether
the field is conservative or not.

2
Q2 Define Poynting vector. Give its significance.

--- Content provided by FirstRanker.com ---

2
Q3 Define Meissner effect and differentiate type-I, type-II superconductors.

--- Content provided by FirstRanker.com ---

4
Q4 Derive London equations and give their significance.


4

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Q5 The critical magnetic field for a superconductor at absolute zero is
1 4
10 9
- ? Am and at 6K is
1 4

--- Content provided by FirstRanker.com ---

10 5
- ? Am . Find the critical temperature and
energy required to break Cooper pair at absolute zero.

--- Content provided by FirstRanker.com ---

4
Q6 (i) Show that for plane electromagnetic waves propagating in
vacuum, electric field is perpendicular to magnetic field as

--- Content provided by FirstRanker.com ---

well as to direction of propagation.

(ii) Write Maxwell?s equations and give their significance.
5

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3

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Department of Applied Sciences
Program B.Tech.(ME34 ) Semester 2

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Subject Code BSC-18101 Subject Title Physics
Mid Semester Test (MST)
No.
1 Course
Coordinator(s)

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Subject Expert
Dr Harpreet Kaur Grewal

Dr Randhir Singh
Max. Marks 24 Time Duration 1 hour 30 minutes

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Date of MST 23
rd
Feb, 2019 Roll Number

Note: Attempt all questions

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Q. No. Question Marks
Q1
A vector field is given as : k yz i xy A
? ?
+ =

--- Content provided by FirstRanker.com ---

?
. Find
? ?
? ? A and tell whether
the field is conservative or not.

--- Content provided by FirstRanker.com ---

2
Q2 Define Poynting vector. Give its significance.

2

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Q3 Define stress and strain and give their types.


4
Q4 Discuss briefly, the motion of a lightly damped oscillator.

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4
Q5 The displacement of a particle executing SHM is changing with time as
x=Acos?

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o
t. Find the displacement at which kinetic energy of the particle
is equal to its potential energy.

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4
Q6 (i) Show that for plane electromagnetic waves propagating in
vacuum, electric field is perpendicular to magnetic field as

--- Content provided by FirstRanker.com ---

well as to direction of propagation.

(ii) Write Maxwell?s equations and give their significance.
5

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3

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