Gujarat Technological UniversitySummer 2025 examination

GTU 3110011 Physics Summer 2025 Question Paper & PDF

B.E. · Common Engineering · Semesters 1 and 2 · Subject code 3110011
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Total
70 marks
To pass
23 marks (33%)
Duration
2.5 Hours 10:30 AM – 1:00 PM
Questions
5 with internal choice
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14 of 25 questions on this paper were also asked in other years. 3 more are types of question GTU sets again with new data. Each is marked below with the years it appeared.See all 36 repeated 3110011 questions, most asked first

Q.1

14 Marks
(a)
3 marks
Define: Stress, Strain, and Spring constant.
(b)
4 marksSame type asked in 3 of 7 papers

A hall has a volume of 2265 m³. Its total absorption is equivalent to 94.85 sabinem2. What will be the effect on reverberation time if the audience fill the hall, and thereby increasing the absorption by another 94.85 sabinem2?

Also asked in Winter 2025 Q2a, Summer 2023 Q5a OR

(c)
7 marks

What is superconductor? Discuss about the Meissner effect, the effect of magnetic fields and the Isotopic effect in superconductors.

Q.2

14 Marks
(a)
3 marksAsked in 6 of 7 papers
State any six properties of ultrasound.

Also asked in Summer 2026 Q2a, Winter 2025 Q4b OR, Winter 2024 Q3b, Summer 2024 Q3a, Winter 2023 Q3a

(b)
4 marksSame type asked in 3 of 7 papers

Calculate the critical current for a superconducting wire made of lead, having a diameter of 1 mm at 4.2 K. Critical temperature (TC) for lead is 7.18 K and H0 = 6.5  10⁴ A/m.

Also asked in Winter 2023 Q4b, Summer 2023 Q5a

(c)
7 marksAsked in 5 of 7 papers
Discuss the construction and working of He-Ne laser.

Also asked in Summer 2026 Q1c, Summer 2024 Q4c OR, Winter 2023 Q5c, Summer 2023 Q3c

(c)
7 marksAsked in 7 of 7 papers
Discuss the construction and working of Ruby laser.

Also asked in Summer 2026 Q4c OR, Winter 2025 Q5c OR, Winter 2024 Q4c OR, Summer 2024 Q4c, Winter 2023 Q4c OR, Summer 2023 Q5c OR

Q.3

14 Marks
(a)
3 marks

Find the force required to increase the length of a steel wire of 10⁻⁶ m² area of cross- section by 50% whose Young’s modulus is 2  10¹¹ N/m².

(b)
4 marksAsked in 4 of 7 papers
Discuss the stress-strain curve for solid in detail.

Also asked in Summer 2026 Q1b, Winter 2024 Q1c, Summer 2024 Q1b

(c)
7 marksAsked in 3 of 7 papers

Derive the differential equation for damped harmonic motion. Also, derive the solution for the case where 𝑏² < 𝜔0

2

Also asked in Winter 2025 Q2c OR, Winter 2023 Q2c

(a)
3 marksAsked in 2 of 7 papers
Derive the differential equation for simple harmonic motion.

Also asked in Winter 2025 Q2c

(b)
4 marksAsked in 4 of 7 papers
Discuss any four factors affecting acoustics of a building and their remedies.

Also asked in Summer 2026 Q3a OR, Winter 2024 Q2c OR, Summer 2024 Q4b

(c)
7 marksAsked in 3 of 7 papers

What is torsional pendulum? Derive the expression for the time period of vibration for torsional pendulum.

Also asked in Summer 2024 Q2c, Winter 2023 Q1b

Q.4

14 Marks
(a)
3 marksAsked in 2 of 7 papers
Explain the working of SONAR in detail.

Also asked in Summer 2023 Q5b OR

(b)
4 marksSame type asked in 5 of 7 papers

Calculate the length of nickel rod required to produce ultrasonic waves with frequencies of 50 kHz and 100 kHz. Consider the fundamental mode of vibration for the rod. Given: Density of nickel = 8908 kg/m³, Young’s modulus of nickel = 2.14  10¹¹ N/m².

Also asked in Summer 2026 Q5b OR, Winter 2024 Q3a OR, Summer 2024 Q3b, Winter 2023 Q3b, Winter 2023 Q3b OR

(c)
7 marksAsked in 2 of 7 papers
Discuss the BCS theory to explain superconductivity in materials.

Also asked in Summer 2024 Q5b OR

(a)
3 marksAsked in 2 of 7 papers
State any six applications of superconductors.

Also asked in Winter 2024 Q5c OR

(b)
4 marks
Explain the construction and working of SQUID using Josephson junctions.
(c)
7 marksAsked in 5 of 7 papers

Discuss the construction and working of piezoelectric oscillator for the production of ultrasonic waves.

Also asked in Summer 2026 Q2c, Winter 2025 Q4c OR, Winter 2024 Q3c, Summer 2024 Q1c

Q.5

14 Marks
(a)
3 marks
Define: Population inversion, Meta-stable state, and Pumping.
(b)
4 marksAsked in 6 of 7 papers
State any eight applications of lasers in various fields.

Also asked in Summer 2026 Q4a OR, Winter 2025 Q5b OR, Winter 2024 Q5b, Summer 2024 Q4a, Winter 2023 Q5a OR

(c)
7 marks
What is Non-destructive testing (NDT)? Discuss the use of ultrasound in NDT.
(a)
3 marks
Define: Simple Harmonic Motion, Forced Vibration, and Free Vibration.
(b)
4 marks
Discuss about Young’s modulus and bulk modulus in detail.
(c)
7 marksAsked in 3 of 7 papers
What is Einstein’s coefficient? Derive the relation between Einstein’s coefficients.

Also asked in Summer 2026 Q5c, Winter 2025 Q4c

More Physics papers

Questions repeat across sessions. Working through two or three papers shows you which topics GTU asks most.

Summer 202670 marks · 5 questions
Winter 202570 marks · 5 questions
Winter 202470 marks · 5 questions
Summer 202470 marks · 5 questions

Other Semester 1 subjects

BE Common

3110001
Chemistry
3110002
English
3110003
Programming for Problem Solving
3110004
Basic Civil Engineering

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About this paper

Official Gujarat Technological University (GTU) examination paper for Physics (Summer 2025, B.E. · Common Engineering, Sem 1). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.

Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.

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