Solved question paper for SCOP May-2023 (B-TECH 1st-2nd)
Solved Question Paper
Semi-Conductor and Optoelectronics Physics May-2023
PTU • B-TECH • Mechanical Engineering • 1st-2nd • May-2023
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
Solved-
Write briefly: a) What are 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) State Bloch's theorem for a periodic system.Very Short Answer 2 Marks May-2023 • PTU B-TECH
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Write briefly: d) Explain why the conductivity of a pure semiconductor increases with temperature while that of a metal decreases.Very Short Answer 2 Marks May-2023 • PTU B-TECH
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Write briefly: e) The energy gap in an LED is 1.5 eV. Find the wavelength of electromagnetic radiation it would emit.Very Short Answer 2 Marks May-2023 • PTU B-TECH
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Nov 2024 Write briefly: f) Calculate the wavelength of light emitted from LED made using semiconductor material with band gap 1 eV.
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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) What physical parameters can be extracted from I-V characteristics of the diode?Very Short Answer 2 Marks May-2023 • PTU B-TECH
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Dec 2023 How can we extract different parameters from I-V characteristics of diode?
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May 2019 What physical parameters can be known from I-V characteristics of diode? 2 | M-75363 (S1)-2761
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Write briefly: i) What do you mean by negative effective mass of electron?Very Short Answer 2 Marks May-2023 • PTU B-TECH
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Write briefly: j) What are the types of semiconductor photo detectors?Very Short Answer 2 Marks May-2023 • PTU B-TECH
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Define Fermi energy. Derive an expression for Fermi energy of a system of free electrons.Long Answer 8 Marks May-2023 • PTU B-TECH
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Dec 2023 What do you mean by Fermi energy? Obtain an expression for the Fermi energy of a free electron gas in three dimensions.
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Discuss the Kronig-Penny model for the motion of an electron in a periodic potential.Long Answer 8 Marks May-2023 • PTU B-TECH
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May 2019 Discuss the Kronig-Penny model for the motion of an electron in a periodic potential. [8]
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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 2019 Derive an expression for the densities of electrons and h oles in the conduction and valence bands respectively of an intrinsic semiconductor [8]
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What do you mean by intrinsic and extrinsic semiconductors?
Long Answer 8 Marks May-2023 • PTU B-TECHExisting answers are stored as HTML; you can edit directly without converting to Markdown.
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What do you mean by direct and indirect band gaps materials?Long Answer 8 Marks May-2023 • PTU B-TECH
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Describe the construction and working of a semiconductor laser with necessary diagram.Long Answer 8 Marks May-2023 • PTU B-TECH
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What are light emitting diodes? Discuss the structure and characteristics of LEDs.Long Answer 8 Marks May-2023 • PTU B-TECH
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What are photodiodes? Find an expression for total steady state diode photocurrent density for long diode.Long Answer 8 Marks May-2023 • PTU B-TECH
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Illustrate with 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 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.