Solved question paper for PHYSICS Dec-2011 (B-TECH 1st-2nd)
Solved Question Paper
Engineering physics Dec-2011
PTU • B-TECH • Civil Engineering • 1st-2nd • Dec-2011
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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Select at least Two questions from Section - B & C.Short Answer Dec-2011 • PTU B-TECH
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May 2024 Select atleast TWO questions from SECTION -B & C.
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May 2019 Select atleast TWO questions from SECTION - B & C.
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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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Dec 2018 Select atleast TWO questions from SECTION - B & C.
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May 2017 Select atleast TWO questions from SECTION - B & C.
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May 2017 Select atleast TWO questions from SECTION - B & C.
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May 2017 Select atleast TWO questions from SECTION - B & C.
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May 2016 Select atleast TWO questions from SECTION -B & C.
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May 2016 Select atleast TWO questions from SECTION - B & C.
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Dec 2016 Select at least TWO questions from SECTION - B & C.
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May 2015 Select atleast TWO questions from SECTION - B & C.
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May 2015 Select atleast TWO questions from SECTION - B & C.
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Dec 2015 Select ATLEAST TWO questions from SECTION - B & C.
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May 2014 Select at least Two questions from each ofthe Sections B & C. Section —A
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May 2013 Select atleast TWO questions from SECTION - B & C.
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May 2013 Select atleast TWO questions from SECTION - B & C.
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May 2012 Selecting at least TWO questions from SECTION -B & C each .
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Dec 2012 Select atleast TWO questions from SECTION - B & C.
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May 2011 Select at least Two questions from Section - B & C
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Dec 2011 Select atleast Two questions from Section – B & C.
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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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May 2009 Select atleast Two questions from Section - B & C. ,
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Dec 2009 Select atleast TWo questions from Section - B & C.
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May 2008 Select atleast TWo questions from Section - B and C.
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Dec 2008 Select at least Two questions from Section - B&C.
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(2 Marks each)Short Answer Dec-2011 • PTU B-TECH
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May 2014 (2 marks each)
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Dec 2011 (2 Marks each)
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Enumerate different polarization mechanisms in dielectrics?Short Answer Dec-2011 • 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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May 2015 Discuss various polarizations induced in the dielectric when it is subjected to external electric field. (4,4)
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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 2005 What is dielectric polarization?
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Dec 2004 What is dielectric polarization?
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Iron is a ferromagnetic material but a piece of iron does not ordinarily behave as a magnet. Explain.Short Answer Dec-2011 • PTU B-TECH
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Explain the meaning of stimulated emission.Short Answer Dec-2011 • PTU B-TECH
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Dec 2017 What is meant by stimulated emission?
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Dec 2016 What do you mean by stimulated emission?
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May 2012 What is spontaneous emission?
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May 2011 Define spontaneous and stimulated emission.
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Dec 2004 What is difference between stimulated and spontaneous emission?
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Bring out the differences betwee n step-index and graded-index fibers.Short Answer Dec-2011 • PTU B-TECH
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May 2013 Explain the difference between a step-index fibre and graded index fibre.
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Dec 2007 Differentiate between Step-index and Graded-index fibre.
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What is the electric flux through a closed surface surrounding an electric dipole? Explain.Short Answer Dec-2011 • PTU B-TECH
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Is the earth an inertial frame? If not, why?Short Answer Dec-2011 • PTU B-TECH
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Dec 2016 “Is earth an inertial frame of reference”? Comment.
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Write the Bragg's equation fo r X-ray diffraction and explain the meaning of various symbols in it.Short Answer Dec-2011 • PTU B-TECH
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What is the method of pumping in a Ruby laser?Short Answer Dec-2011 • PTU B-TECH
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State the conditions which a phys ically acceptable wave-function must obey.Short Answer Dec-2011 • PTU B-TECH
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Mention some important changes that occur in substances when they change from their normal state to the superconducting state. Section – B (8 Marks each)Short Answer Dec-2011 • PTU B-TECH
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Write down the four Maxwell's equa tions in differential form. Discuss the significance of each. Explain Maxwell's modification of Ampere's law.Short Answer Dec-2011 • PTU B-TECH
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May 2025 a. Write the Maxwell\\\'s equations and discuss the physical significance of each equation.
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Dec 2023 a) Write the Maxwell\\\'s equations and discuss the physical significance of each equation.
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May 2019 Derive all Maxwell’s equations in free space and explain their physical significance.
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May 2018 Write Maxwell’s four equations of electromagnetic theory and briefly interpret each of them. (4)
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May 2017 Write Maxwell\'s equations in integral form and attach physical significance to each of them.
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Dec 2017 Write Maxwell\'s four equations of electromagnetic theory and briefly interpret each of them.
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May 2016 Write Maxwell’s four equations of electromagnetic theory and briefly interpret each of them. (4)
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Dec 2014 Write Maxwell’s equations in differential form and give their physical significance
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May 2011 Write down maxwell equations and explain their significance.
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Dec 2010 Write down Maxwell\'s equations and explain their physical significance.
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Dec 2008 Give the physical significance of Maxwell\'s equations.
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Dec 2005 Write maxwells equations. Explain the physic al significance of each equation.
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Dielectric constant of a gas at NT.P . is 1.00074. If the gas is held in an external field of 3 x 10 4 V/m, calculate the dipole moment of each atom of the gas.Short Answer Dec-2011 • PTU B-TECH
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What are the distinguishing ch aracteristics of ferromagnetism? Discuss the domain theory of ferromagnetism.Short Answer Dec-2011 • PTU B-TECH
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May 2024 What are ferromagnetic materials? Explain ferromagnetism using domain theory.
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May 2017 Give brief account of various phenomena involved i n formation of domains in ferromagnetic materials. (5)
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May 2014 Explain briefly the concept of a ferromagnetic domain.
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May 2010 What are ferromagnetic domains? Explain their existence in terms of atomic dipole moments.
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May 2008 Discuss the domain theory of ferromagnetism.
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The magnetic susceptibilit y of silicon is -4.2x10-6. Find its magnetization and the magnetic flux density when it is placed in magnetic field of strength 1.2x10 5 A/m.Short Answer Dec-2011 • PTU B-TECH
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What are Einstein's coefficients? Explain their meaning and derive the relation between them. J - 1214 2Short Answer Dec-2011 • PTU B-TECH
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Dec 2023 What are Einstein\\\'s coefficients? Derive the relation between Einstein\\\'s coefficients and discuss the physical interpretation.
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May 2018 Describe Einstein’s coefficients and the significance of relation between them. (3)
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May 2013 What are Einstein’s coefficients? Derive relation between them.
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Dec 2007 Write the physical significance of Einstein Coefficients.
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Dec 2005 What are Einstein’s coefficients? How are these co-related?
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What is a hologram? How is it produced and how is the image reconstructed from it?Short Answer Dec-2011 • PTU B-TECH
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May 2018 State the working principle of holography
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May 2013 What is the fundamental principle of a hologram?
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May 2011 What is holography?
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Dec 2010 What is the fundamental principle of a hologram?
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May 2005 What is holography?
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Dec 2005 What is holography?
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What is an optical fiber? Explain the meaning of the terms:Short Answer Dec-2011 • PTU B-TECH
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Acceptance angleShort Answer Dec-2011 • PTU B-TECH
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Numerical apertureShort Answer Dec-2011 • PTU B-TECH
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May 2011 numerical aperture.
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Normalized frequencyShort Answer Dec-2011 • PTU B-TECH
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Fractional change in refractive indexShort Answer Dec-2011 • PTU B-TECH
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The core diameter of a graded i ndex fiber is 0.05 mm and its numerical aperture is 0.22. If it carries light of wavelength 850 nm, what is the normalized frequency and what is the maximum number of modes that can be propagated through the fiber? Section – C (8 Marks each)Short Answer Dec-2011 • PTU B-TECH
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What was the objective of conducting the Michelson Morley experiment? Describe the experiment. How do you interpret its result?Short Answer Dec-2011 • PTU B-TECH
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Dec 2017 What is the outcome of Michelson Morley Experiment?
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May 2016 How you interpret the negative result of the Michelson Morely experiment? (2)
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Dec 2014 What were the conclusions of Michelson-Morley experiment?
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Dec 2014 What were the results of Michelson-Morley Experiment?
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A spaceship moving away from earth with velocity 0.6c fires a rocket whose velocity relative to the spaceship is 0.7c away from the earth. What will be the velocity of the rocket, as observed from the earth?Short Answer Dec-2011 • PTU B-TECH
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May 2014 A spaceship moving away from the earth with a speed 0.9c fires a missile in the same direction as its motion, with speed 0.7c relative to the spaceship. What is the speed of the missile relative to the earth? (3)
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What is Moseley's law and what is its significance? How do you explain it on the basis of Bohr's theory?Short Answer Dec-2011 • PTU B-TECH
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The first order diffract ion of X-rays is found to occur from a crystal at a glancing angle of 9°. Calculate the wavelength of the X-rays and the glancing angle for their second order diffraction if the inter-planar spacing in the crystal is 2.51 Å.Short Answer Dec-2011 • PTU B-TECH
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What is the difference betw een phase and group ve locities? Show that the wave group associated with a particle moves with the velocity of theShort Answer Dec-2011 • PTU B-TECH
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May 2015 What is the matter wave associated with moving particle ? Derive expression for phase and group velocities of such a wave packet.
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Dec 2010 What is the difference between phase and group velocities? Show that the de Broglie group velocity associated with the wave packet is equal to the velocity of the particle.
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X-rays of wavelength 0.144 Å are scattered from a graphite block. Find the maximum shift in their wavelength and the maximum energy imparted to the recoil electrons.Short Answer Dec-2011 • PTU B-TECH
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What is Meissner effect? Expl ain the difference between Type-I and Type-II superconductors.Short Answer Dec-2011 • 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 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 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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Determine the critical temperature for aluminium if the magnetic flux penetration depths for aluminium are 16 nm and 96 nm at 2.18 K and 8.1 K, respectively. DEDEShort Answer Dec-2011 • 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.
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