Solved question paper for SCP May-2023 (B-TECH 1st-2nd)
Solved Question Paper
Semi-Conductor and Physics May-2023
PTU • B-TECH • Mechanical Engineering • 1st-2nd • May-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
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Write briefly: a) Describe the main drawbacks of classical free electron theory.Very Short Answer 2 Marks May-2023 • PTU B-TECH
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Write briefly: b) What do you understand by Fermi level? Explain its significance in semiconductors.Very Short Answer 2 Marks May-2023 • PTU B-TECH
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Write briefly: c) What do you mean by effective mass of an electron?Very Short Answer 2 Marks May-2023 • PTU B-TECH
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Dec 2023 Write briefly : c) What do you mean by effective mass?
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Write briefly: d) Enumerate some of the properties of semiconductors.Very Short Answer 2 Marks May-2023 • PTU B-TECH
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Write briefly: e) What are Brillouin zones?Very Short Answer 2 Marks May-2023 • PTU B-TECH
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Write briefly: f) Explain the terms: spontaneous and stimulated emission of radiation.Very Short Answer 2 Marks May-2023 • PTU B-TECH
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Write briefly: g) What property of materials can be measured with Hot-point probe?Very Short Answer 2 Marks May-2023 • PTU B-TECH
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Write briefly: h) Discuss salient characteristics of laser beam.Very Short Answer 2 Marks May-2023 • PTU B-TECH
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Write briefly: i) What do you mean by population inversion?Very Short Answer 2 Marks May-2023 • PTU B-TECH
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May 2025 Write briefly:\r\nf. Define population inversion.
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Write briefly: j) What do you mean by photovoltaic effect?Very Short Answer 2 Marks May-2023 • PTU B-TECH
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Derive an expression for Fermi energy of a system of free electrons. Discuss briefly the effect of temperature.Long Answer 8 Marks May-2023 • PTU B-TECH
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Discuss the Kronig-Penny model. Using the model show the energy spectrum of electron consisting of a number of allowed energy bands separated by forbidden bands.Long Answer 8 Marks May-2023 • PTU B-TECH
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Derive an expression for the densities of electrons and holes in the conduction and valence bands respectively of an intrinsic semiconductor.Long Answer 8 Marks May-2023 • PTU B-TECH
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May 2020 Derive an expression for the densities of electrons and holes in the conduction and valence bands respectively of an intrinsic semiconductor [8]
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Dec 2020 Derive an expression for the densities of electrons and holes in the conduction and valence bands respectively of an intrinsic semiconductor [8]
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May 2019 Derive an expression for the densities of electrons and holes in the conducti on and valence bands respectively of an intrinsic semiconductor. [8]
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a) Distinguish between intrinsic and extrinsic semiconductors with suitable examples.Long Answer 8 Marks May-2023 • PTU B-TECH
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May 2019 Distinguish between intrinsic and extrinsic semiconductors with suitable examples. [4]
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b) What do you mean by direct and indirect band gaps materials.Long Answer 8 Marks May-2023 • PTU B-TECH
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Discuss Einstein's coefficient. Derive relation between them.Long Answer 8 Marks May-2023 • PTU B-TECH
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May 2025 What are Einstein coefficients? Obtain the relation between Einstein coefficients and discuss its importance.
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How does a semiconductor laser differ from other laser? Explain main features of the semiconductor laser and its applications.Long Answer 8 Marks May-2023 • PTU B-TECH
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May 2020 How does a semiconductor laser differ from other laser? Explain main features of the semiconductor laser and its applications. [8]
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Dec 2020 How does a semiconductor laser differ from other laser? Explain main features of the semiconductor laser and its applications. [8]
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May 2019 How does a semiconductor laser differ from other laser? Explain main features of the semiconductor laser and its applications. [8]
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Describe a method for the measurement of divergence and wavelength of light. What physical parameters can be extracted from current-voltage characteristics.Long Answer 8 Marks May-2023 • PTU B-TECH
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Explain with a proper diagram about the measurement of carrier density and resistivity by four probe method.Long Answer 8 Marks May-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.