Gujarat Technological UniversityWinter 2024 examination

GTU 3110018 Physics Winter 2024 Question Paper & PDF

B.E. · Common Engineering · Semesters 1 and 2 · Subject code 3110018
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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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15 of 25 questions on this paper were also asked in other years. 1 more is a type of question GTU sets again with new data. Each is marked below with the years it appeared.See all 40 repeated 3110018 questions, most asked first

Q.1

14 Marks
(a)
3 marks
Define: (1) Valance Band (2) Current density (3) Fermi Function
(b)
4 marksAsked in 4 of 7 papers

Distinguish between Direct energy band gap semiconductor and Indirect energy band gap semiconductor with any four points.

Also asked in Summer 2025 Q4b, Summer 2024 Q5a, Summer 2023 Q2b

(c)
7 marksAsked in 6 of 7 papers

Explain in details about Kroning-Penney model and discuss the different cases with necessary diagrams.

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

Q.2

14 Marks
(a)
3 marks
List out any six applications of Solar cell.
(b)
4 marks

The energy gap of two intrinsic semiconductors A and B are 0.36 eV and 0.72 eV respectively. Compare the carrier density of semiconductors A and B at temperature 300 K.

(c)
7 marksAsked in 3 of 7 papers
Define density of holes in valence band and derive the necessary equation for it.

Also asked in Winter 2025 Q2c, Summer 2024 Q2c

(c)
4 marks
1State and prove the Law of Mass Action.
2Define Luminescence and categories them with suitable illustrations.

Q.3

14 Marks
(a)
3 marksAsked in 4 of 7 papers

Distinguish between Spontaneous Emission and Stimulated emission with any three points.

Also asked in Summer 2025 Q4a, Winter 2023 Q5b, Summer 2023 Q1b

(b)
4 marksAsked in 4 of 7 papers
Define Exciton and classify them in details.

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

(c)
7 marksAsked in 2 of 7 papers

Derive the expression for Fermi energy and carrier concentration in N-type semiconductor.

Also asked in Winter 2025 Q3c

(a)
3 marksAsked in 3 of 7 papers

Distinguish between N-type semiconductor and P-type semiconductor with any four points.

Also asked in Summer 2025 Q2b, Summer 2024 Q2a

(b)
4 marks

What are the processes known as carrier generation and recombination? Explain the Optical Generation and recombination process for charge carriers.

(c)
7 marksAsked in 2 of 7 papers
Derive the relation between Einstein’s coefficients and interpret the results.

Also asked in Summer 2024 Q2c OR

Q.4

14 Marks
(a)
3 marks
Define: (1) Superconductivity (2) Critical Temperature (3) Cooper pair
(b)
4 marks

The values of critical magnetic field for a superconductor are 270 T and 60 T at temperature 20 K and 90 K respectively. Calculate the values of critical temperature and zero magnetic field.

(c)
7 marksAsked in 5 of 7 papers
Define density of state and derive the necessary formula for DOS.

Also asked in Winter 2025 Q4c, Summer 2025 Q2c OR, Winter 2023 Q2c, Summer 2023 Q2c OR

(a)
3 marks

Name the types of capacitances are associated with PN junction and briefly explain each of them.

(b)
4 marksAsked in 5 of 7 papers
Explain the Hot Point Probe method to verify the type of extrinsic semiconductors.

Also asked in Summer 2026 Q4a, Winter 2025 Q4a OR, Summer 2024 Q1b, Summer 2023 Q4b OR

(c)
7 marksAsked in 4 of 7 papers

Explain the Four Probe method and derive the necessary formula to find the resistivity of Balk material.

Also asked in Summer 2026 Q2c, Summer 2025 Q5c OR, Summer 2023 Q5c

Q.5

14 Marks
(a)
3 marksAsked in 5 of 7 papers
Distinguish between type-I superconductor and type-II superconductor.

Also asked in Winter 2025 Q5a, Summer 2025 Q5b, Summer 2024 Q2b, Summer 2023 Q5b

(b)
4 marksSame type asked in 2 of 7 papers

For a metal having density of electron is 6.5 × 10²⁸ then find the relaxation time of conduction electrons if the metal resistivity is 1.435 × 10⁻⁸ ohm-meter

Also asked in Summer 2026 Q5b

(c)
7 marksAsked in 2 of 7 papers

Explain the Vander Pauw measurement method. Discuss about the measurement of Resistivity of the material by this method.

Also asked in Winter 2025 Q4b OR

(a)
3 marksAsked in 6 of 7 papers
What is Drude Model? List out the basic assumptions of Drude Model.

Also asked in Summer 2026 Q1a, Summer 2025 Q2a, Summer 2024 Q3a OR, Winter 2023 Q1a, Summer 2023 Q2a

(b)
4 marksAsked in 4 of 7 papers

Discuss about Meissner’s effect with diagrams and prove that the superconductors are perfect diamagnetic material.

Also asked in Summer 2026 Q5c, Summer 2025 Q5a, Summer 2023 Q4c

(c)
4 marks
1What is Josephson’s Junction? Explain the types of Josephson’s effect.
2Calculate the Critical magnetic field and Critical Current for a superconducting wire of Lead having a diameter of 1 mm at 4.2 K. Critical temperature of lead is 7.18 k and zero magnetic field is 65 kA/m.

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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