Solved question paper for PHYSICS Dec-2004 (B-TECH 1st-2nd)
Solved Question Paper
Engineering physics Dec-2004
PTU • B-TECH • Civil Engineering • 1st-2nd • Dec-2004
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-
State the faraday’s law in electromagnetic i nduction.Short Answer Dec-2004 • PTU B-TECH
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Dec 2017 State Ampere\'s circuital law in electromagnetism.
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May 2012 Define Faraday’s laws of electromagnetic induction.
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May 2008 State and explainAmpere\'s circuital law.
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May 2005 State the Ampere’s circuital law in electrom agnetism.
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Define magnetic intensity and magnetization.Short Answer Dec-2004 • PTU B-TECH
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May 2005 Define the magnetic induction and magnetization.
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What is difference between stimulated and spontaneous emission?Short Answer Dec-2004 • 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 2011 Explain the meaning of stimulated emission.
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What is numerical aperture?Short Answer Dec-2004 • PTU B-TECH
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State Einstein’s postulates of special theory of relativity.Short Answer Dec-2004 • 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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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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Explain Bragg’s law.Short Answer Dec-2004 • PTU B-TECH
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Dec 2017 Describe Bragg\'s law and give its importance in crystallography.
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What is Uncertainty principle?Short Answer Dec-2004 • PTU B-TECH
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Dec 2017 Describe \'Uncertainty principle\'.
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May 2016 State and explain the uncertainty principle. (2)
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May 2011 What is the importance of uncertainty principle? R-541 P.T,O.
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Dec 2005 Explain briefly uncertainty principle.
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What is meissner effect?Short Answer Dec-2004 • 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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May 2015 What is Meissner effect?
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Dec 2011 What is the physical mech anism behind Meissner effect.
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Give the Born interpretation of wave function.Short Answer Dec-2004 • PTU B-TECH
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May 2015 Discuss the Born’s interpretation of wave function.
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What is dielectric polarization?Short Answer Dec-2004 • 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 2011 Enumerate different polarization mechanisms in dielectrics?
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Dec 2005 What is dielectric polarization?
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State and prove the Gauss’s law in electrostatic s and express it in differential form ∆ .E = P/ε 0 3. What do you understand by magnetic materials? Wh at are differences between hard and soft magnetic materials?Short Answer Dec-2004 • PTU B-TECH
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What do you understand by holography? Derive the relation between Einstein coefficients.Short Answer Dec-2004 • PTU B-TECH
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What is total internal reflection? Calculate the numerical aperture and hence the acceptance angle for an optical fiber given than refractive index of the core and cladding are 1.45 and 1.40 respectively.Short Answer Dec-2004 • PTU B-TECH
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May 2010 Calculate the numerical aperture, acceptance angle and the critical angle of a fiber having core and cladding refractive indices as 1.5 and 1.45, respectively.
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Dec 2009 Calculate the numerical aperture, acceptance angle and the critical angel of a fiber having core refractive index 1.5 and the cladding refractive index 1.45.
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May 2005 What is numerical aperture? Calculate the numeri cal aperture and acceptance angle for an optical fiber, given that refractive index of core and cladding are 1.45 and 1.40 respectively.
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Show that the mass of the body in motion is given by m = m 0 / √ (1-v 2 /cShort Answer Dec-2004 • PTU B-TECH
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Where m 0 is the rest mass and v is the velocity of the body.Short Answer Dec-2004 • PTU B-TECH
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Explain the production of characteristic X-ray s pectra. An X-ray tube operated at 40 KV emits a continuous X-ray spectrum with a short wavelength l imit X m = 0.310 Å. Calculate the Plank’s constant.Short Answer Dec-2004 • PTU B-TECH
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May 2005 Explain the production of characteristic X-ray s pectra. An X-ray tube operated at 40 KV emits a continuous X-ray spectrum with a short wavelength l imit X m = 0.310 Å. Calculate the Plank’s constant.
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For a particle in one dimensional box, show the value of uncertainly product ∆x ∆p = h [(n 2 π 2 )/12 – 1/2] 1/2Short Answer Dec-2004 • PTU B-TECH
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What is superconductivity? What are differences between Type-I and Type-II superconductors? A type-I superconductor with T C = 7K has shape dB T /d T = -25mT/K = T C Estimate its critical field at 6K. Calculate the j ump in specific heat at TShort Answer Dec-2004 • PTU B-TECH
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May 2005 What is Miesnner effect? Show how London equatio ns lead to this effect. A type-I superconductor with T C = 7K has shape dB T /d T = -25mT/K = T C Estimate its critical field at 6K. Calculate the j ump in specific heat at T
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Answers about this subject, solved papers, and preparation.
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.