Solved question paper for PHYSICS Dec-2007 (B-TECH 1st-2nd)
Solved Question Paper
Engineering physics Dec-2007
PTU • B-TECH • Civil Engineering • 1st-2nd • Dec-2007
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-
Find the electric field strength for a uniform charge distribution.Short Answer Dec-2007 • PTU B-TECH
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What is polarization?Short Answer Dec-2007 • PTU B-TECH
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Define Coercive force and hysteresis.Short Answer Dec-2007 • PTU B-TECH
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Write the physical significance of Einstein Coefficients.Short Answer Dec-2007 • 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 2011 What are Einstein\'s coefficients? Explain their meaning and derive the relation between them. J - 1214 2
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Dec 2005 What are Einstein’s coefficients? How are these co-related?
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Define Holography.Short Answer Dec-2007 • PTU B-TECH
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May 2018 Describe the term ‘holography’.
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May 2016 Describe the term “holography”.
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Dec 2008 Define Holography?
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Write the postulates of Einstein special theory of relativity.Short Answer Dec-2007 • 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 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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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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State Bragg’s law?Short Answer Dec-2007 • PTU B-TECH
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Distinguish between phase and group velocity.Short Answer Dec-2007 • PTU B-TECH
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May 2019 Differentiate between group and phase velocities of waves.
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May 2018 Differentiate between phase velocity and group velocity
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May 2013 Differentiate between phase velocity and group velocity.
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State Meissner effect of superconductivity.Short Answer Dec-2007 • PTU B-TECH
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Define Acceptance angle and Numerical aperture in optical fibre.Short Answer Dec-2007 • PTU B-TECH
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Dec 2023 Write briefly:\r\nf) Define acceptance angle and numerical aperture in optical fibers.
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May 2018 Derive the expression for numerical aperture of an optical fibre. Discuss the relation between numerical aperture and acceptance angle. (4)
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Dec 2017 Derive the expression for numerical aperture of an optical fiber. Discuss the relation numerical aperture and acceptance angle
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May 2016 Derive the expression for numerical aperture of an optical fibre. Discuss the relation numerical aperture and acceptance angle. (4)
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Prove Gauss’s law in integral form ∫ S dsE. = 01 ε ∫ dv. ρ .What do you mean by Gaussian surface. Derive Coulomb’s law from Gauss’s law.Short Answer Dec-2007 • PTU B-TECH
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Deduce Maxwell’s equation for free space and prove that the electromagnetic waves are transverse in nature.Short Answer Dec-2007 • PTU B-TECH
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Prove that the area of the B-H curve is 1/4 π times the energy dissipated per cc of the metal during each magnetic cycle.Short Answer Dec-2007 • PTU B-TECH
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Find out the expression of magnetic moment due to orbital and spin motion of electron.Short Answer Dec-2007 • PTU B-TECH
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Explain the action of He-Ne laser. How it is superior to Ruby laser?Short Answer Dec-2007 • PTU B-TECH
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Dec 2023 What is laser? Describe the principle, construction and working of He-Ne laser.
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Dec 2019 Describe the principle, construction and working of He-Ne laser.
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May 2017 Discuss the construction and working of a He-Ne laser. (5)
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May 2014 Describe the construction and working of a He-Ne laser.
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May 2011 Differentiate between three level and four level lasers. Give the construction and working of He-Ne laser.
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May 2008 Explain the construction and working of He-Ne laser.
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In a Ruby laser, total number of Cr +3 ions is 2.8 x 10Short Answer Dec-2007 • PTU B-TECH
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If the laser emits radiation of wavelength 7000Ǻ, then calculate energy of one emitted photon and total energy available per laser pulse.Short Answer Dec-2007 • PTU B-TECH
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Differentiate between Step-index and Graded-index fibre.Short Answer Dec-2007 • 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 2011 Bring out the differences betwee n step-index and graded-index fibers.
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What will be the critical angle for a ray in a step-index fibre for which n=1.53 and which has a cladding whose refractive index is 2.5% less.Short Answer Dec-2007 • PTU B-TECH
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prove the relation F=ma is covariant under relativistic transformation.Short Answer Dec-2007 • PTU B-TECH
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Show that the relativistic form of Newton’s second law when F is parallel to v is F=m 0 dt dv 2 / 3 221 − − cv 7. (a) Explain why the continuous spectrum has a sharp point and short wavelength side?Short Answer Dec-2007 • PTU B-TECH
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In a x-ray energy 75 KeV is scattered at 45°, then calculate the energy of scattered x-ray.Short Answer Dec-2007 • PTU B-TECH
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Prove Heisenberg’s uncertainty principle. ∆h.∆p ≥h/2Short Answer Dec-2007 • PTU B-TECH
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If the energy of the particle is zero, then prove using quantum mechanics that it can not exist in a box.Short Answer Dec-2007 • PTU B-TECH
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What is London’s penetration depth? How does it vary with temperature?Short Answer Dec-2007 • PTU B-TECH
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Define Cooper pair. Calculate the wavelength of photon, which will be required to break a Cooper-pair in a superconductor like Zr whose T c is 0.56K.Short Answer Dec-2007 • 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.