Solved question paper for SCP Dec-2023 (B-TECH 1st-2nd)
Solved Question Paper
Semi-Conductor and Physics Dec-2023
PTU • B-TECH • Mechanical Engineering • 1st-2nd • Dec-2023
Semi-Conductor and Physics previous year question papers on BRpaper are organized for students of Punjab Technical University’s Bachelor of Technology program, 1st-2nd semester. This section makes it easier to browse subject-wise old question papers for Semi-Conductor and Physics, so students can review how questions are typically framed in past exams and get a sense of the exam pattern. Many students search for semi-conductor and physics previous year question paper while preparing for exams, and this page is built to support exactly that kind of subject-wise browsing and revision. BRpaper is not the official website of Punjab Technical University or any institution, and it does not publish official notices or academic updates.
These Questions are downloaded from www.brpaper.com. You can also download previous years question papers of 10th and 12th (PSEB & CBSE), B-Tech, Diploma, BBA, BCA, MBA, MCA, M-Tech, PGDCA, B-Com, BSc-IT, MSC-IT.
Solved Questions
Solved-
1(a) Explain the terms : (i) Drift velocity and (ii) Carrier mobility.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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1(b) What are the basic assumptions of classical free electron theory?Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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1(c) What do you understand by wave function?Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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1(d) Why are we not aware of quantization in the daily experience?Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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1(e) Explain it. What is the density of states? Discuss briefly.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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1(f) Give the physical basis of effective mass and explain its physical significance.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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1(g) Write a short note on the band theory of solids.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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1(h) Define the following terms : (i) Population inversion (ii) Purpning.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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1(i) What is Fermi level and Fermi energy?Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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1(j) What is exciton?Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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Obtain an expression for the electrical conductivity of metal on the basis of the free-electron theory. Hence prove Ohm's law.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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Discuss with suitable mathematical expressions, the motion of an electron in a periodic potential. Explain how the above theory leads to the concept of the band structure of solids.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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Derive an expression for Fermi energy in an intrinsic semiconductor. What is the effect of temperature on Fermi level in an intrinsic semiconductor?Long Answer 8 Marks Dec-2023 • PTU B-TECH
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May 2025 What is the need of extrinsic semiconductors? Discuss the effect of temperature on the Fermi level in extrinsic semiconductors.
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Dec 2024 What is the need of extrinsic semiconductors? Discuss the effect of temperature on the Fermi level in extrinsic semiconductors.
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Dec 2024 What is the need of extrinsic semiconductors? Discuss the effect of temperature on the Fermi level in extrinsic semiconductors.
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Differentiate the n-type and p-type semiconductors with their Fermi level diagram.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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For an intrinsic semiconductor having a band gap Eg = 0.7 eV, calculate the density of holes and electrons at room temperature (= 27°C). https://www.plustudy.comLong Answer 8 Marks Dec-2023 • PTU B-TECH
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Explain the term 'spontaneous' and 'stimulated' emission of radiation. Obtain a relation between transition probabilities of spontaneous and stimulated emission.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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Describe the construction and working of a semiconductor laser with necessary diagrams. Discuss its merits over other lasers.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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May 2024 Explain the principle, construction and working of a homo-junction semiconductor laser with diagram, Discuss the demerits of homojunction semiconductor laser.
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Explain the concept of divisionality and monochromaticity as applied to lasers.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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What is the Hall effect? Give an experimental method of calculating concentration and type of charges in a given semiconductor.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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Assume that there are 5 × 10^{28} atoms/m^3 in Cu, find the Hall coefficient.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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FAQ
Frequently Asked Questions
Answers about this subject, solved papers, and preparation.
01 Where can I find Semi-Conductor and Physics previous year question papers for Bachelor of Technology, 1st-2nd semester?
This page lists Semi-Conductor and Physics question papers uploaded for Punjab Technical University Bachelor of Technology, 1st-2nd semester, organized for subject-wise browsing where available.
02 Are these official Punjab Technical University question papers?
BRpaper is not the official website of Punjab Technical University. These papers are shared for reference and revision purposes only and are not official university material.
03 How can previous year Semi-Conductor and Physics papers help in exam preparation?
Reviewing past papers can help you understand how questions are typically framed, notice commonly repeated topics, and get a sense of the exam pattern before your own exam.
04 What kind of topics does Semi-Conductor and Physics usually cover?
The question papers here relate to the official Semi-Conductor and Physics syllabus set by the university for this course and semester.
05 Does this page include a Semi-Conductor and Physics previous year question paper or solved answers?
This page focuses on providing access to the previous year question papers themselves. A separate question bank or solved answers may not be available for every paper.
06 Can I find papers for other subjects in the same Bachelor of Technology?
Yes, BRpaper organizes papers by university, course, stream, and semester, so you can browse other subjects within the same Punjab Technical University Bachelor of Technology.