Solved question paper for PHYSICS Dec-2020 (B-TECH 1st-2nd)
Solved Question Paper
Engineering physics Dec-2020
PTU • B-TECH • Civil Engineering • 1st-2nd • Dec-2020
engineering 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 engineering 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 engineering physics with answers pdf 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.
PART A
1. EM waves & Dielectrics:
Physical significance of Gradient, Divergence & Curl, Relationship between Electric Field & Potential, Dielectric polarization, displacement Current, Types of polarization, Maxwell‟s Equations, Equation of EM waves in free space, velocity of EM waves, Poynting vector, Electromagnetic Spectrum ( Basic ideas of different region).
2. Magnetic Materials & Superconductivity:
Basic ideas of Dia, Para, Ferro & Ferri, Ferrites, Magnetic Anisotropy, Magnetostriction its applications in production of Ultrasonic waves, Superconductivity, Superconductors as ideal diamagnetic materials, Signatures of Superconducting state, Meissner Effect, Type I & Type II superconductors, London Equations, Introduction to BCS theory.
3. Elements of crystallography:
Unit cell, Basis, Space lattice, Crystal Systems, Miller Indices of Planes & Directions in cubic system, Continuous & Characteristic X-Rays, X-Ray Diffraction & Bragg‟s law in Crystals, Bragg‟s spectrometer, X-ray radiography.
4. Lasers:
Spontaneous & Stimulated emissions, Einstein‟s Coefficients, Population Inversion, Pumping Mechanisms, Components of a laser System, Three & four level laser systems; Ruby, He-Ne, CO2 and semiconductor Lasers, Introduction to Holography.
PART B
5. Fibre Optics:
Introduction, Acceptance Angle, Numerical Aperture, Normalized frequency, Modes of propagation, material dispersion & pulse broadening in optical fibres, fibre connectors, splices and couplers, applications of optical fibres.
6. Special Theory of Relativity:
Concept of Ether, Michelson Morley Experiment, Einstein‟s postulates, Lorentz transformation equations; length, time and simultaneity in relativity, addition of velocity, variation of mass with velocity, Mass-Energy and Energy-momentum relations.
7. Quantum Theory:
Need and origin of quantum concept, Wave-particle duality, Matter waves, Group & Phase velocities, Uncertainty Principle, Significance & normalization of wave function, Schrodinger wave equation: time independent & dependent, Eigen functions & Eigen values, particle in a box.
8. Nanophysics:
Nanoscale, surface to volume ratio, electron confinement, nanoparticles (1D, 2D, 3D), Nanomaterials, Unusual properties of nanomaterials, synthesis of nanomaterials- ball milling and sol-gel techniques, Carbon nanotubes (synthesis and properties), applications of nanomaterials.
Solved Questions
Solved-
What do you mean by a rotational and irrotational field?Short Answer Dec-2020 • PTU B-TECH
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Give the expression for Poynting vector and its physical significance.Short Answer Dec-2020 • PTU B-TECH
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Dec 2019 What does a Poynting vector measures?
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May 2018 What is physical significance of Poynting vector?
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Dec 2014 What information does the quantity poynting vector furnish?
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Differentiate between Type - I & Type - II superconductors.Short Answer Dec-2020 • PTU B-TECH
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May 2023 What is superconductivity? Discuss Type-I and Type-II superconductors.
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Dec 2023 Mention different types of superconductors. How type-II superconductor differs from type-I superconductor?
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Dec 2023 Write short notes on: c) What are Type I and Type II Superconductors?
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May 2019 What are Type I and Type II superconductors?
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Dec 2019 What are Type-I and Type-II superconductors?
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May 2018 What do you understand by type I superconductors?
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May 2017 What are type I and type II superconductors and give their distinguishing features. 3
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May 2017 What are type I and type II superconductors and give their distinguishing features. 3
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May 2017 What are type I and type II superconductors? Give their distinguishing characteristics. (4)
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Dec 2017 What do you mean by Meissner effect? Discuss Type I and Type II Superconductors. ( b) Give a quantitative explanation of BCS theory of superconductors. How does this theory explain major characteristics of superconductors?
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Dec 2016 What are type I superconductors?
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May 2015 Give a brief account of Type I and II superconductors. (4,4)
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May 2012 What are type II superconductors?
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May 2012 Differentiate between type I and type II superconductors. (5,3)
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May 2011 What do you understand by type - I and type - II superconductors? Explain with examPles.
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Dec 2011 What is Meissner effect? Expl ain the difference between Type-I and Type-II superconductors.
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Dec 2010 Explain the deference between the Type I and Type II superconductors. \\\' (b) Give the salient features of BCS theory of superconductors.
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Dec 2005 What do you understand by type I and type II superconductors? Give the BCS theory of superconductivity.
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Define terms: unit cell, basis and space lattice.Short Answer Dec-2020 • PTU B-TECH
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May 2024 Define unit cell.
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May 2019 Define Unit Cell and basis in a crystal.
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Write about the basic components of a laser system.Short Answer Dec-2020 • PTU B-TECH
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May 2012 What are main components of a laser system?
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What do you understand by material dispersi on and pulse broadening in optical fibres?Short Answer Dec-2020 • PTU B-TECH
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Dec 2023 What is an optical fiber? What is pulse dispersion? How it can be minimised?
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May 2019 Explain pulse broadening in optical fibres.
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May 2015 Discuss pulse and material dispersion observed in optica l fibers. How is pulse dispersion minimized?
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Write Einstein ’ s two postulates of special theory of relativity.Short Answer Dec-2020 • PTU B-TECH
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May 2018 Write the postulates of special theory of relativity.
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May 2017 Give basic postulates of special theory of relativity.
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May 2017 Give basic postulates of special theory of relativity.
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Dec 2017 Write the Einstein\'s postulates of special theory of relativity.
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May 2015 What were the postulates of special theory of relativity?
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May 2014 State the postulates of the Special Theory of Relativity.
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May 2013 What are postulates of special theory of relativity?
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Dec 2011 Give Einstein postulates of special theory of relativity.
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May 2010 State and explain postulates of special theory of relativity with help of example.
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Dec 2009 Explain various postulates of Special theory ofRelativity.
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Dec 2007 Write the postulates of Einstein special theory of relativity.
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May 2005 State Einstein’s postulates of special theory of relativity.
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Dec 2004 State Einstein’s postulates of special theory of relativity.
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Derive the energy - momentum relationship.Short Answer Dec-2020 • PTU B-TECH
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What do you understand by eigen functions & eigen values in quantum mechanics?Short Answer Dec-2020 • PTU B-TECH
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May 2019 What do you mean by eigenfunctions and eigenvalues?
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Dec 2017 What do you understand by eigen functions.
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May 2005 What do you understand by Eigen values and Eigen functions?
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What is t he surface to volume ratio at nanoscale? 2|M- - 352-B11 . a) Discuss different types of polarization in dielectrics. 3 b) Write Maxwell ’ s equations in free space in their integral form. 2 c) Explain Electromagnetic spectrum giving basic ideas of different regions. 312. What is a superconducting state of a substance? Explain superconductivity on the basis of BCS theory. 813. a) Differentiate between continuous and characteristic X - rays. 3 b) Discuss briefly the experimental method for crystal structure determination by X - ray diffraction. 514. a) Differentiate between three & four level laser systems. 3 b) Discuss the construction, working and energy level diagram of He - Ne Ruby laser. 5-C15 . a) Discuss the propagation mechanism of light waves in optical fibre .2 b) What are single mode, multimode and graded index fibres? 3c) Write a short note on the applications of optical fibres. 316. a) Explain the construction, working and result of Michelson Morley experiment .5 b) Derive the expression for addition of velocities under relativistic motion. 317. a) By giving suitable examples, explain the need and origin of quantum mechanics .4 b) Derive time - independent Schrodinger wave equat ion. 418. a) Discuss the basic difference between 0 D, 1 D, 2D and 3 D nanomaterials. 4 b) What do you understand by carbon nanotubes and methods for their synthesis? 4N 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 StudentShort Answer Dec-2020 • PTU B-TECH
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01 Where can I find engineering physics previous year question papers for Bachelor of Technology, 1st-2nd semester?
This page lists engineering 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 engineering 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 engineering physics usually cover?
The question papers here relate to the official engineering physics syllabus set by the university for this course and semester.
05 Does this page include a engineering physics with answers pdf 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.