Engineering Physics (BAS201) - AKTU Question Paper 2022-23
B.Tech · Semester 2 · Free PDF Download
This is the official AKTU Engineering Physics Previous Year Question Paper for B.Tech Semester 2, academic session 2022-23. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.
Course:B.Tech
Semester:Semester 2
Session:2022-23
University:AKTU / UPTU
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Questions Asked in 2022-23
Engineering Physics (BAS201) — complete question paper
Section AAttempt all questions in brief. 2 x 7 = 14
- aCan Compton effect be observed with visible light? Explain briefly
- bWhat was the objective of conducting Davisson-Germer experiment?
- cDifferentiate between conduction current and displacement current
- dWhy two independent light sources cannot produce interference pattern?
- eWhat are the changes that are caused in the diffraction pattern if the number of slits are made large?
- fWhat do you understand by stimulated emission of radiation in a laser?
- gWhat do you mean by a Quantum Well?
Section BAttempt any three of the following: 7 x 3 = 21
- aDiscuss any three physical phenomenon which could not be explained on the basis of classical physics
- bState and explain Stoke’s theorem and Divergence theorem
- cDescribe how Newton’s ring experiment can be used to determine the refractive index of a liquid
- dDefine the relative refractive index difference of an optical fiber. Show how it is related to numerical aperture
- eWhat do you mean by super conductivity? Discuss high temperature superconductors and some potential applications
Section CAttempt any one part of the following: 7 x 1 = 7
- aDistinguish between group velocity and phase velocity. Establish a relation between them in a dispersive medium. What will be relation between these velocities in non- dispersive medium?
- bSolve Schrödinger equation for a free particle in one dimensional box and show that the energy eigen values are discrete. An electron is trapped in one dimensional region of length 1.0 A0. Find the amount of energy that must be supplied to excite the electron from ground state to first excited state
- aDerive the electromagnetic wave equations in free space. Calculate the amplitude of electric and magnetic fields E0 and H0, at a distance of 5m from an oscillator which radiates energy isotropically at 1000W
- bDefine skin depth. Write the necessary formula for the skin depth for conducting and non-conducting media. Calculate the skin depth for silver at 108 Hz frequency. Given- for silver μ = μo, μo = 4πx10-7 N/A2, σ = 3x107 mhos/m
- a(i) Obtain an expression for the fringe width in a wedge-shaped thin film and explain nature of fringe pattern. (ii) A light of wavelength 6000Å falls normally on a slit of width 0.10 mm. Calculate the total angular width of the central maximum
- b(i) What particular spectra would be absent if width of the transparencies and opacities of the grating are equal. (ii) A plane transmission grating has 16,000 lines to an inch over a length of 5 inches. Find in wavelength region of 6000Å, in the second order, the smallest wavelength difference that can be resolved
- aWhat are solid state lasers? Explain construction and working of Ruby laser with suitable diagrams
- bDiscuss the important factors responsible for the loss of power in optical fiber. Calculate the fiber loss through the optical fiber when the mean optical power launched into a 5 km length of fiber is 120 x10-6 W and the mean optical power at receiver is 4x10-6W
- aDiscuss the effect of external magnetic field on superconductors. The transition temperature for Pb is 7.2K, however, at 5K it loses the superconducting property subjected to a magnetic field of 3.3 x 10ସA/m. Find the maximum value of H which allow the metal to retain its superconductivity at 0K
- bDiscuss properties and the potential applications of nano materials. What are the risks of using nano materials to human body?
Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.
Repeated Questions — BAS201
Questions that appeared in more than one session, found by comparing 3 years of Engineering Physics papers (2022-23, 2023-24, 2024-25)
2x
Describe how Newton’s ring experiment can be used to determine the refractive index of a liquid
Appeared in: 2022-23 · 2023-24
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