Solved question paper for SCOP May-2025 (B-TECH 1st-2nd)
Solved Question Paper
Semi-Conductor and Optoelectronics Physics May-2025
PTU • B-TECH • Mechanical Engineering • 1st-2nd • May-2025
Semi-Conductor and Optoelectronics 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 Optoelectronics 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 optoelectronics 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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Explain any method to measure the wavelength of monochromatic light. Can the same method be used for measuring wavelength of white light?Long Answer 8 Marks May-2025 • PTU B-TECH
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Nov 2024 Explain any method to measure the wavelength of laser light. Can the same method be used for measuring wavelength of white light?
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What is Four-point probe method? How to calculate the band gap using Four-point probe method?Long Answer 8 Marks May-2025 • PTU B-TECH
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Dec 2023 What is four-point probe method? How to calculate the band gap using Four-point probe method?
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What is photo-detector? Explain the principle, construction and working of p-n photodiode. Discuss its disadvantages.Long Answer 8 Marks May-2025 • PTU B-TECH
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Nov 2024 What is a photo-detector? Explain the principle, construction and working of an Avalanche photodiode. Discuss its advantages.
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Dec 2023 What is photo-detector? Explain the principle, construction and working of avalanche photodiode. Discuss its advantages.
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Explain the principle, construction and working of a hetero-junction semiconductor laser with diagram. Discuss the merits of heterojunction semiconductor laser.Long Answer 8 Marks May-2025 • PTU B-TECH
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Dec 2023 Explain the principle, construction and working of a homo junction semi-conductor laser with diagram. Discuss the demerits of homojunction semiconductor laser.
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Obtain the expression for carrier concentration in extrinsic semiconductor.Long Answer 8 Marks May-2025 • PTU B-TECH
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Dec 2023 Obtain the expression for carrier concentration in p-type semiconductor.
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Discuss the VI characteristics of a p-n junction. Draw circuit diagram and explain the different features of VI characteristics.Long Answer 8 Marks May-2025 • PTU B-TECH
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State Bloch's theorem for particles in a periodic potential? Explain the origin of energy bands using Kronig-Penny model.Long Answer 8 Marks May-2025 • PTU B-TECH
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Nov 2024 What is Kronig-penney model? Solve Schrödinger wave equation for periodic potential and explain the origin of energy bands in solids.
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Calculate the fermi energy of sodium at 0K assuming that it has one free electron per atom and density of sodium is 970 kg/m^3 and atomic weight is 23.Long Answer 8 Marks May-2025 • PTU B-TECH
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Obtain the expression for density of states in 3D.Long Answer 8 Marks May-2025 • PTU B-TECH
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Write briefly: j) What information can be obtained from capacitance-voltage measurement?Very Short Answer 2 Marks May-2025 • PTU B-TECH
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Nov 2024 What information can be obtained from capacitance-voltage measurement?
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Write briefly: i) What are the necessary conditions for applying Van der Pauw method?Very Short Answer 2 Marks May-2025 • PTU B-TECH
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Nov 2024 What are the necessary conditions for applying Van der Pauw method?
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Dec 2023 i) What are the necessary conditions for applying Van der Pauw method?
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Write briefly: h) When a laser has 1V applied to it, it draws 10 mA and produce 1 mW of optical power. What is the efficiency of laser?Very Short Answer 2 Marks May-2025 • PTU B-TECH
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Write briefly: g) Discuss non-Radiative recombination mechanism.Very Short Answer 2 Marks May-2025 • PTU B-TECH
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Nov 2024 Write briefly: g) Discuss radiative recombination mechanism.
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Write briefly: f) Distinguish between Spontaneous and Stimulated emission.Very Short Answer 2 Marks May-2025 • PTU B-TECH
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Dec 2023 f) Distinguish between Spontaneous and Stimulated emission.
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Write briefly: e) What do you understand from carrier generation and recombination?Very Short Answer 2 Marks May-2025 • PTU B-TECH
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Dec 2023 e) What do you understand from carrier generation and recombination?
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Dec 2020 What do you mean by carrier generation and recombination process? [4]
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May 2019 What do you mean by carrier generation and recombination process? [4]
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Write briefly: d) Write a note on Ohmic junctions.Very Short Answer 2 Marks May-2025 • PTU B-TECH
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Write briefly: c) At what temperature we can expect a 10% probability that electrons in silver have an energy which is 1% above the Fermi energy? The Fermi energy of silver is 5.0 eV.Very Short Answer 2 Marks May-2025 • PTU B-TECH
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Nov 2024 Write briefly: c) At what temperature we can expect a 5% probability that electrons in silver have an energy which is 1% above the Fermi energy? The Fermi energy of silver is 4.0 eV.
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Dec 2023 c) At what temperature we can expect a 20% probability that electrons in silver have an energy which is 20% above the Fermi energy? The Fermi energy of silver is 5.5 eV.
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Write briefly: b) What is effective mass?Very Short Answer 2 Marks May-2025 • PTU B-TECH
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Dec 2023 b) What is effective mass?
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Write briefly: a) Distinguish between direct and indirect band gap.Very Short Answer 2 Marks May-2025 • 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 Optoelectronics Physics previous year question papers for Bachelor of Technology, 1st-2nd semester?
This page lists Semi-Conductor and Optoelectronics 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 Optoelectronics 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 Optoelectronics Physics usually cover?
The question papers here relate to the official Semi-Conductor and Optoelectronics Physics syllabus set by the university for this course and semester.
05 Does this page include a Semi-Conductor and Optoelectronics 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.