Solved question paper for PHYSICS May-2015 (B-TECH 1st-2nd)
Solved Question Paper
Engineering physics May-2015
PTU • B-TECH • Civil Engineering • 1st-2nd • May-2015
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
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SECTION - B & C. have FOUR questions each.Short Answer May-2015 • PTU B-TECH
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May 2024 SECTION-B &C have FOUR questions each.
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May 2013 SECTION - B & C have FOUR questions each.
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Select atleast TWO questions from SECTION - B & C.Short Answer May-2015 • PTU B-TECH
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May 2018 Select at least TWO questions from each SECTION - B & C. M-54016 Page 1 of 2
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May 2018 Select at least TWO questions from SECTION - B & C. M-54105 Page 1 of 2
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May 2014 Select at least Two questions from each ofthe Sections B & C. Section —A
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May 2012 Selecting at least TWO questions from SECTION -B & C each .
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May 2010 Select at least lbo questions from Section B & C.
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Dec 2010 Selecting at least Two questions from Section - B & c.
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Write briefly :Short Answer May-2015 • PTU B-TECH
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Why no Compton effect is observed with visible light?Short Answer May-2015 • PTU B-TECH
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Dec 2015 Why no Compton effect can be observed with radiowaves?
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What is the origin of displacement current?Short Answer May-2015 • PTU B-TECH
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Dec 2017 What do you understand by displacement current . Suggest a method to calculate it.
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Dec 2015 What are the conduction and displacement currents?
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May 2013 What do you mean by displacement current?
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May 2012 What do you mean by displacement current?
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Dec 2008 What is the cause of producing displacement current?
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What is Meissner effect?Short Answer May-2015 • PTU B-TECH
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May 2019 Explain Meissner effect.
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Dec 2016 What do you understand by Meissner effect?
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Dec 2011 What is the physical mech anism behind Meissner effect.
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Dec 2004 What is meissner effect?
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What are the origins of characteristic and continuous x-rays?Short Answer May-2015 • PTU B-TECH
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May 2017 How are the characteristics x-rays produced?
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Dec 2015 What is the physical phenomenon underlying the generation of x-rays?
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Dec 2005 What is the origin of X-rays? Explain.
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What is population inversion and give its significance in lasing action?Short Answer May-2015 • PTU B-TECH
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Dec 2019 What is population inversion in laser and how it is achieved?
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May 2017 What is population inversion and give its significance in lasing action?
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May 2017 What is population inversion and give its significance in lasing action?
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What is acceptance angle of an optical fiber?Short Answer May-2015 • PTU B-TECH
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Dec 2015 What is acceptance angle of an optical fiber?
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Dec 2010 What is meant by acceptance angle for an optical fibre? Show how it is related to numerical aperture.
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What were the postulates of special theory of relativity?Short Answer May-2015 • PTU B-TECH
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Dec 2020 Write Einstein ’ s two postulates of special theory of relativity.
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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 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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Justify why a photon can’t be brought to rest in any frame of reference.Short Answer May-2015 • PTU B-TECH
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Dec 2014 Justify why a photon can\'t be brought to rest in any frame of reference.
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Why a particle trapped in a box can’t be at rest?Short Answer May-2015 • PTU B-TECH
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May 2015 Why a particle trapped in a box can’t be at rest?
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What are hard and soft magnetic materials? 2 | M C o d e 5 4 0 1 6 ( S 1 ) - 2 5 0Short Answer May-2015 • PTU B-TECH
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Using Maxwell’s equations, obtain the equations of electric and magnetic waves propagating in free space.Short Answer May-2015 • PTU B-TECH
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Dec 2023 a) Write Maxwell\\\'s equations in free space in their differential form and derive the EM wave equation.
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May 2019 Write all for Maxwell’s equations in integral form for free space.
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May 2014 Writetthe four Maxwell’s equations in differential form.
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Dec 2011 Write Maxwell equations for free space.
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May 2009 Derive the relations for Maxwell\'s equations\'
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Discuss various polarizations induced in the dielectric when it is subjected to external electric field. (4,4)Short Answer May-2015 • PTU B-TECH
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Dec 2019 a) What is meant by polarization of a material? Mention the different mechanism of polarization in a dielectric.
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May 2016 Briefly discuss different dielectric polarization mechanisms. Also specify temperature dependence in each case. (4)
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Dec 2016 What are main characteristics of dielectric materials?
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Dec 2014 Discuss various kinds of polarizations induced in the dielectric when it is subjected to external electric field.
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Dec 2011 Enumerate different polarization mechanisms in dielectrics?
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Dec 2005 What is dielectric polarization?
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Dec 2004 What is dielectric polarization?
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Write a short note on ferrites and their applications.Short Answer May-2015 • PTU B-TECH
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Dec 2017 What do you understand by ferrites? Discuss their main applications.
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Dec 2017 Explain the term ‘ferrites’ Discuss various applications of ferrites.
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Dec 2015 What are ferrite materials? Discuss their atomic origin and give certain applications of ferrites. (4)
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May 2011 What are ferrite materials? Give some of its useful applications.
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Dec 2009 Mention some applications ofFerrite.materials.
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May 2008 What are ferrites? Give their applications. R - sey [20ss] P.TO.
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May 2005 Give some applications of ferrites.
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Dec 2005 What are ferrites?
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Give a brief account of Type I and II superconductors. (4,4)Short Answer May-2015 • 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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Dec 2020 Differentiate between Type - I & 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 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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Discuss the principle and working of semiconductor lasers.Short Answer May-2015 • PTU B-TECH
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What is the role of Helium gas in lasing action in He -Ne laser. Give the wavelength of output radiation. (5,3)Short Answer May-2015 • PTU B-TECH
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Discuss pulse and material dispersion observed in optica l fibers. How is pulse dispersion minimized?Short Answer May-2015 • 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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Dec 2020 What do you understand by material dispersi on and pulse broadening in optical fibres?
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May 2019 Explain pulse broadening in optical fibres.
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Write a note on the applications of optical fibers. (5,3)Short Answer May-2015 • PTU B-TECH
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Derive the expression for variation of mass with velocity for a relativistic particle.Short Answer May-2015 • PTU B-TECH
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Dec 2023 How does mass vary with relativistic velocity? Develop its relation.
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May 2018 Derive the relativistic relation for variation of mass with velocity. (4)
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May 2017 Derive the expression for variation of mass of a relativistic body with velocity. 5
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May 2017 Derive the expression for variation of mass of a relativistic body with velocity. 5
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Dec 2017 Derive the relativistic relation for variation of mass with velocity.
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Why was concept of ether introduced and what properties were assigned to it? (6,2)Short Answer May-2015 • PTU B-TECH
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When x-rays propagate through a medium, discuss various processes through which it suffers attenuation in its intensity.Short Answer May-2015 • PTU B-TECH
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Derive Bragg’s law and discuss its applications in crystallography. (4,4)Short Answer May-2015 • PTU B-TECH
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Dec 2023 What are X-rays? Discuss the diffraction of X-ray from crystals and obtain Bragg\\\'s law.
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May 2019 What is Laue equation for diffraction of X -rays by a crystalline solid? Show that the Bragg’s equation is a special case of Laue equation.
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May 2017 What is Bragg\'s law. Derive the Bragg ’s condition for x-ray diffraction. What are the limitations of Bragg\'s law? 5
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May 2017 What is Bragg\'s law. Derive the Bragg ’s condition for x-ray diffraction. What are the limitations of Bragg\'s law? 5
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Dec 2015 What is Bragg’ s law and derive its expression for diffraction of x -rays? What are limitations of this law in determination of crystal structure? (4)
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May 2013 What is X-ray diffraction? Deduce Bragg’s Law for the diffraction of X-ray in a crystal. What are Bragg’s conditions for X-ray diffraction?
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May 2008 Derive the Bragg\'s equation for dififraction of X-Rays and discuss its\' application in X-Ray Crystallography.
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Dec 2005 Explain and deduce Bragg’s law in X-ray diffraction. Describe Bragg’s spectrometer and expl ain how it is used to determine the wave length of X-rays.
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Discuss the Born’s interpretation of wave function.Short Answer May-2015 • PTU B-TECH
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Dec 2004 Give the Born interpretation of wave function.
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A particle of mass m is trapped in one dimensional potential well of infinite depth. Find its normalised wave functions and quantized energies. (4,4)Short Answer May-2015 • PTU B-TECH
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Write a note on superconductivity with emphasis on magnetic and thermodynamic properties.Short Answer May-2015 • PTU B-TECH
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Dec 2016 Write a brief note on high temperature superconductors. (4)
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Dec 2015 Give a brief account of superconductivity while throwing light on magnetic and thermodynamic properties. (4)
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Write down London’s equations and give their physical significance. (4,4)Short Answer May-2015 • PTU B-TECH
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Dec 2015 Write down London’s equations and give their physical significance. (4)
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01 Where can I find engineering physics previous year question papers for Bachelor of Technology, 1st-2nd semester?
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