What is the exam pattern and passing mark for GTU Physics (3110011)?

The GTU theory examination carries 70 total marks with a duration of 2.5 Hours. Minimum passing criteria is 23 marks (33%). The paper consists of 5 main questions with official marking breakdown and internal choices.

Where can I download the official GTU 3110011 Winter 2023 question paper PDF?

The official GTU question paper PDF is linked directly from Gujarat Technological University's official examination archive. You can view the full paper online or download the original file.

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Gujarat Technological UniversityWinter 2023 examination

GTU 3110011 Physics Winter 2023 Question Paper & PDF

B.E. · Common Engineering · Semester 1 · Subject code 3110011

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Total: 70 marks
To pass: 23 marks (33%)
Duration: 2.5 Hours 2:30 PM – 5:00 PM
Questions: 5 with internal choice

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10 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

Explain the term bulk modulus, modulus of rigidity and yield point.

(b)

4 marksAsked in 3 of 7 papers

Derive the formula for time period of a torsional pendulum.

Also asked in Summer 2025 Q3c OR, Summer 2024 Q2c

(c)

7 marksAsked in 4 of 7 papers

What is Cantilever? Obtain the expression for depression at free end of thin beam clamped horizontally at one end and loaded at other end.

Also asked in Summer 2026 Q3c, Summer 2024 Q2c OR, Summer 2023 Q2c

Q.2

14 Marks

(a)

3 marks

Explain sound absorption and reverberation.

(b)

4 marks

Discuss in detail the forced vibration and amplitude resonance.

(c)

7 marksAsked in 3 of 7 papers

What is damping motion? Derive the differential equation and general solution of damped harmonic motion.

Also asked in Winter 2025 Q2c OR, Summer 2025 Q3c

(c)

7 marks

Discuss in detail the different types of elasticity. List different factors affecting elasticity.

Q.3

14 Marks

(a)

3 marksAsked in 6 of 7 papers

Describe any three property of ultrasonic sound.

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

(b)

4 marksSame type asked in 5 of 7 papers

Calculate the length of nickel rod required to produce ultrasonic waves of frequencies of 50 kHz and 100 kHz. Consider the fundamental mode of vibrations of the rod. Given, density of nickel= 8908 kg/m³, Young’s modulus of the nickel= 2.14 × 10¹¹ N/m².

Also asked in Summer 2026 Q5b OR, Summer 2025 Q4b, Winter 2024 Q3a OR, Summer 2024 Q3b

(c)

7 marksAsked in 3 of 7 papers

Describe production of ultrasonic waves by magnetostriction method. Give its advantages and limitations.

Also asked in Summer 2026 Q2c OR, Summer 2023 Q3c OR

(a)

3 marks

An elastic rod having diameter of 30 mm, 10 cm long extends by 2.5 cm under tensile load of 28 kN. Find the stress, strain and the Young’s modulus for the material of the rod.

(b)

4 marksSame type asked in 5 of 7 papers

A nickel rod having 5 cm length is vibrating at resonance. Calculate the fundamental frequency of vibration for which ultrasonic waves are generated. Given that Young’s modulus of the nickel= 2.14 × 10¹¹ N/m², density of nickel= 8.908 × 10³ kg/m³ .

Also asked in Summer 2026 Q5b OR, Summer 2025 Q4b, Winter 2024 Q3a OR, Summer 2024 Q3b

(c)

7 marks

Explain in detail about the methods for the detection of ultrasound. Give any three applications of ultrasonic waves.

Q.4

14 Marks

(a)

3 marksAsked in 2 of 7 papers

Explain the Josephson’s junction and state any one of its application.

Also asked in Summer 2023 Q4b

(b)

4 marksSame type asked in 3 of 7 papers

Determine the critical current for a superconducting ring of diameter 10⁻³ m at temperature 4.2 K. Given the critical temperature (Tc) for sample is 7.18 K and critical magnetic field at 0 K (Hc(0)) is 6.5 × 10⁴ A/m.

Also asked in Summer 2025 Q2b, Summer 2023 Q5a

(c)

7 marks

Explain London penetration depth. Discuss various applications of superconductors.

(a)

3 marks

Explain NDT. Discuss advantages of NDT.

(b)

4 marks

A critical magnetic field of lead wire is 6.5 × 10³ A/m at 0 K. At what temperature would the critical magnetic field of lead drop to 4.5 × 10³ A/m if the critical temperature of lead is 7.18 K? What is the critical current density at that temperature if the diameter of the wire is 2 × 10⁻³ m?

(c)

7 marksAsked in 7 of 7 papers

Explain in detail construction and working of Ruby LASER with necessary schematic and energy level diagrams.

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

Q.5

14 Marks

(a)

3 marks

In He-Ne laser system, the two energy levels of Ne involved in lasing action have energy values of 20.66 eV and 18.70 eV. Population inversion occurs between these two levels. What will be the wavelength of a laser beam produced? What will be the population of the metastable energy level with respect to the upper excited level at 27 ºC?

(b)

4 marksAsked in 5 of 7 papers

Discuss the properties of LASER.

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

(c)

7 marksAsked in 5 of 7 papers

Describe the construction and working principle of He-Ne LASER with suitable diagrams.

Also asked in Summer 2026 Q1c, Summer 2025 Q2c, Summer 2024 Q4c OR, Summer 2023 Q3c

(a)

3 marksAsked in 6 of 7 papers

Discuss any three important applications of LASER.

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

(b)

4 marks

Explain the term (i) stimulated emission, (ii) population inversion, (iii) pumping and (iv) metastable state.

(c)

7 marks

iWhat will be the resultant sound level when 70 dB sound is added to a 80 dB sound?

iiA particle execute simple harmonic motion with amplitude of 0.1 m and a period of 0.5 s. Calculate its displacement, velocity and acceleration (1/12) s after it crosses the mean position.

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

Winter 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 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.

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