Q.1
14 Marks(a)
Define Ductility, Brittleness and Elasticity.
(c)
Derive an expression for Twisting couple in a wire.
Also asked in Summer 2026 Q3c OR, Winter 2025 Q3c OR
Gujarat Technological UniversitySummer 2023 examination
GTU 3110011 Physics Summer 2023 Question Paper & PDF
B.E. · Common Engineering · Semesters 1 and 2 · Subject code 3110011
- 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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12 of 25 questions on this paper were also asked in other years. 5 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.2
14 Marks(a)
Define simple harmonic motion (SHM). Give Any two examples of it.
(b)
Find the acceleration of particle performing simple harmonic motion when it is at 0.6 m from its mean position. The time period of S.H.M. is 0.05 sec. also calculate maximum velocity if the amplitude of S.H.M. is 2 m.
Also asked in Winter 2025 Q5a
(c)
Derive an expression for depression of cantilever.
Also asked in Summer 2026 Q3c, Summer 2024 Q2c OR, Winter 2023 Q1c
OR
(c)
Explain classification and properties of sound absorbing material.
Q.3
14 Marks(a)
Calculate Poisson’s ratio and the rigidity modulus of copper using following data : Young’s modulus 10.5 x 1010 Nm⁻² and the bulk modulus of copper 14.3 x 10¹⁰ Nm-2.
(c)
Explain construction and working of He – Ne laser.
Also asked in Summer 2026 Q1c, Summer 2025 Q2c, Summer 2024 Q4c OR, Winter 2023 Q5c
OR
(a)
An ultrasonic source of 0.09 MHz sends down a Pulse towards the seabed which returns after 0.55 sec. The velocity of sound in water is 1800 m/s. Calculate the depth of the sea and wavelength of pulse.
Also asked in Winter 2025 Q5a OR, Summer 2024 Q3c OR
(b)
Compare Type –I and Type – II superconductors. (Any four points).
Also asked in Summer 2026 Q5b, Winter 2024 Q4b, Summer 2024 Q5b
(c)
Explain in detail Magnetostriction method for production of ultrasonic waves.
Also asked in Summer 2026 Q2c OR, Winter 2023 Q3c
Q.4
14 Marks(a)
Find the frequency of the first and second modes of vibration for a quartz crystal of piezoelectric oscillator. The velocity of longitudinal waves in quartz is 5.5 x 10³ m/s. thickness of quartz crystal is 0.05 m.
(c)
Discuss Ultrasonic flaw detector method for NDT, with its advantages and limitations.
OR
(a)
The critical temperature of mercury with isotopic mass 199.5 is 4.185 K. calculate its critical temperature when its isotopic mass is 203.4.
Also asked in Summer 2024 Q5a
(b)
Compare Non destructive test (NDT) with destructive test (DT). (any four points)
Also asked in Summer 2026 Q3b OR, Winter 2025 Q5c, Summer 2024 Q3b OR
(c)
Explain basic components of laser generation with diagram. Also give types of laser.
Q.5
14 Marks(a)
Calculate the critical current for a wire of Pb having a diameter of 1 mm at 4.5 K. The critical temperature for Pb is 7.2 K and Hc(0) = H(0) = 6.5 x 10⁴ A/m.
Also asked in Summer 2025 Q2b, Winter 2023 Q4b
(b)
Define pumping with its types.
(c)
Explain Meissner effect. Hence prove that superconductors are perfect diamagnetic materials.
Also asked in Summer 2026 Q5a, Summer 2024 Q1a
OR
(a)
A hall has a volume of 1,20,000 m³, it has reverberation time of 1.5 sec. what is average absorbing power of the surface if the total absorbing surface area is 25,000 m².
Also asked in Winter 2025 Q2a, Summer 2025 Q1b
(c)
Explain construction and working of Ruby laser with necessary diagrams.
Also asked in Summer 2026 Q4c OR, Winter 2025 Q5c OR, Summer 2025 Q2c OR, Winter 2024 Q4c OR, Summer 2024 Q4c, Winter 2023 Q4c OR
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About this paper
Official Gujarat Technological University (GTU) examination paper for Physics (Summer 2023, 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.