Gujarat Technological UniversityWinter 2024 examination

GTU 3110011 Physics Winter 2024 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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10 of 25 questions on this paper were also asked in other years. 4 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

Calculate the twisting couple on a solid shaft of length 1.5 m and diameter 120 mm when it is twisted through an angle 3º. The coefficient of rigidity for the material of the shaft may be taken to be 93 X 10⁹ N/m².

(b)
4 marks
iWhat is Young’s modulus? Give its equation.
iiWhat is Bulk modulus? Give its equation.
iiiWhat is modulus of rigidity? Give its equation.
ivWhat is Poisson’s ratio? Give its equation.
(c)
7 marksAsked in 4 of 7 papers
Explain the Stress-Strain diagram in detail.

Also asked in Summer 2026 Q1b, Summer 2025 Q3b, Summer 2024 Q1b

Q.2

14 Marks
(a)
3 marks

Define sound absorption coefficient. Define reverberation time.

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

The volume of room is 1500 m³. The wall area of the room is 260m², the floor area is 140m² and the ceiling area is 140 m² .The average sound absorption coefficient for wall is 0.03, for the ceiling is 0.8 and for the floor is 0.06. Calculate the average absorption coefficient and the reverberation time.

Also asked in Summer 2026 Q4b OR, Summer 2024 Q4b OR

(c)
7 marks
Explain in detail about characteristics of SHM.
(c)
7 marksAsked in 4 of 7 papers

Discuss various factors affecting the acoustics of buildings and give their remedies.

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

Q.3

14 Marks
(a)
3 marks
Distinguish between transverse and longitudinal wave?
(b)
4 marksAsked in 6 of 7 papers
What are ultrasonic waves? List out the properties of ultrasound.

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

(c)
7 marksAsked in 5 of 7 papers

Explain with required circuit diagram the generation of ultrasonic waves with piezoelectric effect.

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

(a)
3 marksSame type asked in 5 of 7 papers

Calculate the length of an iron rod which can be used to produce ultrasonic waves of 20 KHz. Density of iron is 7.23 X 10³ kg/m³ and Young’s modulus is 11.6 X 10¹⁰ N/m².

Also asked in Summer 2026 Q5b OR, Summer 2025 Q4b, Summer 2024 Q3b, Winter 2023 Q3b, Winter 2023 Q3b OR

(b)
4 marks
Briefly discuss the applications of ultrasound.
(c)
7 marksAsked in 3 of 7 papers

Explain in detail the method for measuring velocity of ultrasound using acoustical grating method.

Also asked in Winter 2025 Q5b, Summer 2024 Q3c

Q.4

14 Marks
(a)
3 marksSame type asked in 2 of 7 papers

The critical temperature of Nb is 9.15 K. At zero kelvin the critical field is 0.196 tesla. Calculate the critical field at 6K.

Also asked in Winter 2025 Q1a

(b)
4 marksAsked in 4 of 7 papers
Compare Type-I and Type-II superconductor.

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

(c)
7 marks

What is meant by superconductivity? Describe the effect of (1) magnetic field, (2) isotope, (3) impurity, (4) current and (5) pressure on superconductors.

(a)
3 marksSame type asked in 3 of 7 papers

Calculate the critical current which can flow through a long thin superconducting wire of aluminum of 10⁻³ m diameter. The critical magnetic field for aluminum is 7.9 X 10³ A∙m⁻¹.

Also asked in Summer 2026 Q5a OR, Summer 2024 Q5a OR

(b)
4 marksAsked in 5 of 7 papers
Explain properties of Laser light.

Also asked in Summer 2026 Q1a, Winter 2025 Q4b, Summer 2024 Q4a OR, Winter 2023 Q5b

(c)
7 marksAsked in 7 of 7 papers
Explain the construction and working of ruby laser.

Also asked in Summer 2026 Q4c OR, Winter 2025 Q5c OR, Summer 2025 Q2c OR, Summer 2024 Q4c, Winter 2023 Q4c OR, Summer 2023 Q5c OR

Q.5

14 Marks
(a)
3 marks

A typical laser emits a 6940 Å wavelength. Find the energy difference (in eV) between the energy levels of this laser.

(b)
4 marksAsked in 6 of 7 papers
Explain various applications of LASER.

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

(c)
7 marks
List out various advantage and disadvantage of NDT.
(a)
3 marks

What is cantilever? Write expressions for depression of cantilever when the load is fixed at the center for rectangular and circular bar.

(b)
4 marks
Explain population inversion with suitable diagram.
(c)
7 marksAsked in 2 of 7 papers
Give a brief account of few important applications of superconductors.

Also asked in Summer 2025 Q4a OR

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
Summer 202570 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 (Winter 2024, 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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