Solved question paper for SCP May-2019 (B-TECH 1st-2nd)
Solved Question Paper
Semi-Conductor and Physics May-2019
PTU • B-TECH • Mechanical Engineering • 1st-2nd • May-2019
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.
Solved Questions
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SECTION - B & C. have FOUR questions each.Short Answer May-2019 • PTU B-TECH
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May 2024 SECTION -B & C. have FOUR questions each.
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Dec 2024 SECTION -B & C. have FOUR questions each.
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May 2020 SECTION -B &C. have FOUR questions each.
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Select atleast TWO questions from SECTION - B & C.Short Answer May-2019 • PTU B-TECH
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May 2024 Select atleast TWO questions from SECTION -B&C.
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Dec 2024 Select atleast TWO questions from SECTION-B&C.
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May 2020 Select atleast TWO questions from SECTION-B&C.
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What do you understand by free electron gas model of metals?Long Answer 10 Marks May-2019 • PTU B-TECH
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Dec 2024 (a) Why are electrons in metals often considered to have free-electron behavior?
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Dec 2024 Why are electrons in metals often considered to have free-electron behavior?
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Dec 2023 What is meant by the free-electrons gas model of metals?
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Discuss the physical significance of the wave function .Long Answer 10 Marks May-2019 • PTU B-TECH
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May 2020 Discuss the physical significance of the wave function ‘Y.
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State Bloch's theorem for a periodic system.Long Answer 10 Marks May-2019 • PTU B-TECH
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How n-type and p-type semiconductors are produced?Long Answer 10 Marks May-2019 • PTU B-TECH
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What do you mean by negative effective mass of electron?Long Answer 10 Marks May-2019 • PTU B-TECH
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May 2020 What do you mean by effective mass of electron?
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May 2019 What do you mean by effective mass of electron?
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The threshold wavelength of a photo diode is 750 nm. Calculate the energy gap in the photo diode in electron volts.Long Answer 10 Marks May-2019 • PTU B-TECH
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Explain the term absorption and spontaneous emission of radiation.Long Answer 10 Marks May-2019 • PTU B-TECH
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Why four probes are required for the measurement of resistivity of semiconductor in four probe method?Long Answer 10 Marks May-2019 • PTU B-TECH
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May 2020 Why four probes are required for the measurement of resistivity of semiconductor in four probe method.
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What do you mean by effective mass of electron?Long Answer 10 Marks May-2019 • PTU B-TECH
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May 2020 What do you mean by effective mass of electron?
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May 2019 What do you mean by negative effective mass of electron?
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What physical parameters can be known from I-V characteristics of diode? 2 | M-75360 (S1)-2760Long Answer 10 Marks May-2019 • PTU B-TECH
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Obtain an expression for thermal conductivity of a metal on the basis of free electron theory. [8]Short Answer May-2019 • PTU B-TECH
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What is the effect of periodic potential on the energy of electrons in a metal? Explain it on the basis of Kronig Penny model and explain the formation of energy bands. [8]Short Answer May-2019 • PTU B-TECH
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May 2020 What is the effect of periodic potential on the energy of electrons in a metal? Explain it on the basis of Kronig Penny model and explain the formation of energy bands. [8]
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Dec 2020 What is the effect of periodic potential on the energy of electrons in a metal? Explain it on the basis of Kronig Penny model and explain the formation of energy bands. [8]
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Derive an expression for the densities of electrons and holes in the conducti on and valence bands respectively of an intrinsic semiconductor. [8]Short Answer May-2019 • PTU B-TECH
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May 2023 Derive an expression for the densities of electrons and holes in the conduction and valence bands respectively of an intrinsic semiconductor.
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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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Distinguish between intrinsic and extrinsic semiconductors with suitable examples. [4]Short Answer May-2019 • PTU B-TECH
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May 2023 a) Distinguish between intrinsic and extrinsic semiconductors with suitable examples.
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Differentiate metals, semiconductors and insulators on the basis of band theory. [4]Short Answer May-2019 • PTU B-TECH
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What do you mean by population inversion ? Obtain a relation between transition probabilities of spontaneous and stimulated emission. [3+5=8]Short Answer May-2019 • PTU B-TECH
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May 2020 What do you mean by population inversion? Obtain a relation between transition probabilities of spontaneous and stimulated emission. (3+5=8]
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How does a semiconductor laser differ from other laser? Explain main features of the semiconductor laser and its applications. [8]Short Answer May-2019 • PTU B-TECH
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May 2023 How does a semiconductor laser differ from other laser? Explain main features of the semiconductor laser and its applications.
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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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What physical parameters can be measured form capacitance -voltage measurements? Describe a method for the measurement of divergence and wavelength of light. [3+5=8]Short Answer May-2019 • PTU B-TECH
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May 2020 What physical parameters can be measured from capacitance-voltage measurements? Describe a method for the measurement of divergence and wavelength of light. [3+5=8] NOTE: Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student. 2 | M-75360 (S1)-588
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Dec 2020 What physical parameters can be measured from capacitance - voltage measurements? Describe a method for the measurement of divergence and wavelength of light. N OTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any pa ge of Answer Sheet will lead to UMC against the Student
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Discuss with proper diagram about the measurement of carrier density, resistivity and hall mobility by van der Pauw method. [8] NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.Short Answer May-2019 • PTU B-TECH
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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.