Solved question paper for SCOP Nov-2024 (B-TECH 1st-2nd)
Solved Question Paper
Semi-Conductor and Optoelectronics Physics Nov-2024
PTU • B-TECH • Mechanical Engineering • 1st-2nd • Nov-2024
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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Write briefly: a) Define Density of state.Very Short Answer 2 Marks Nov-2024 • PTU B-TECH
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Write briefly: b) Out of direct and indirect band gap materials, which are used for the production of light?Very Short Answer 2 Marks Nov-2024 • PTU B-TECH
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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.Very Short Answer 2 Marks Nov-2024 • PTU B-TECH
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May 2025 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.
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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: d) Write a note on metal-semiconductor junctions.Very Short Answer 2 Marks Nov-2024 • PTU B-TECH
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Write briefly: e) Highlight the importance of extrinsic semiconductor.Very Short Answer 2 Marks Nov-2024 • PTU B-TECH
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Write briefly: f) Calculate the wavelength of light emitted from LED made using semiconductor material with band gap 1 eV.Very Short Answer 2 Marks Nov-2024 • PTU B-TECH
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May 2023 Write briefly: e) The energy gap in an LED is 1.5 eV. Find the wavelength of electromagnetic radiation it would emit.
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Write briefly: g) Discuss radiative recombination mechanism.Very Short Answer 2 Marks Nov-2024 • PTU B-TECH
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May 2025 Write briefly: g) Discuss non-Radiative recombination mechanism.
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Write briefly: h) A 10 mW laser has a beam diameter of 3.2 mm. What is the intensity of the light assuming that it is uniform across the beam?Very Short Answer 2 Marks Nov-2024 • PTU B-TECH
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Dec 2023 h) A 20 mW laser has a beam diameter of 2.2 mm. What is the intensity of the light assuming that it is uniform across the beam?
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What information can be obtained from capacitance-voltage measurement?Very Short Answer 2 Marks Nov-2024 • PTU B-TECH
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May 2025 Write briefly: j) What information can be obtained from capacitance-voltage measurement?
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What are the necessary conditions for applying Van der Pauw method?Very Short Answer 2 Marks Nov-2024 • PTU B-TECH
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May 2025 Write briefly: i) 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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Explain the classical free electron theory of metals. Discuss its assumptions, successes, and limitations in explaining the electrical conductivity of metals.Long Answer 8 Marks Nov-2024 • PTU B-TECH
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What is Kronig-penney model? Solve Schrödinger wave equation for periodic potential and explain the origin of energy bands in solids.Long Answer 8 Marks Nov-2024 • PTU B-TECH
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May 2025 State Bloch\'s theorem for particles in a periodic potential? Explain the origin of energy bands using Kronig-Penny model.
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Explain the working of a p-n junction. Discuss the formation of the depletion region, built-in potential and the effect of forward and reverse bias on the junction.Long Answer 8 Marks Nov-2024 • PTU B-TECH
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Obtain the expression for electron density in an intrinsic semiconductor. Estimate the fraction of electron in conduction band at room temperature in Ge with band gap 1.0 eV.Long Answer 8 Marks Nov-2024 • PTU B-TECH
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What is a photo-detector? Explain the principle, construction and working of an Avalanche photodiode. Discuss its advantages.Long Answer 8 Marks Nov-2024 • PTU B-TECH
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May 2025 What is photo-detector? Explain the principle, construction and working of p-n photodiode. Discuss its disadvantages.
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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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What is stimulated absorption, Spontaneous emission and Stimulated emission? Obtain the relation between different Einstein's coefficients and discuss the result.Long Answer 8 Marks Nov-2024 • PTU B-TECH
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Explain any method to measure the wavelength of laser light. Can the same method be used for measuring wavelength of white light?Long Answer 8 Marks Nov-2024 • PTU B-TECH
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May 2025 Explain any method to measure the wavelength of monochromatic light. Can the same method be used for measuring wavelength of white light?
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a) What is Four-point probe method? Explain the measurement of resistivity using it.Long Answer 8 Marks Nov-2024 • PTU B-TECH
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b) The resistivity of an intrinsic semiconductor is 5.5 Z6 Z9m at 30Z9C and 3.0 Z6 Z9m at 42Z9C. Find the band gap.Long Answer 8 Marks Nov-2024 • PTU B-TECH
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FAQ
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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.