Engineering Physics (BAS201) - AKTU Question Paper 2024-25
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 2024-25. 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:2024-25
University:AKTU / UPTU
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Questions Asked in 2024-25
Engineering Physics (BAS201) — complete question paper · 70 marks · 3 Hours
Section AAttempt all questions in brief. 02 x 7 = 14
- aWhat do you mean by population inversion?
- bWhat is Wein’s displacement law?
- cDefine Dispersive power of grating
- dAn electromagnetic wave of frequency 10 MHz is incident normally on a good conductor (e.g., copper) with conductivity σ = 5.8 × 10⁷ S/m and relative permeability μᵣ = 1. What is the skin depth δ of the wave in the conductor? (Use μ₀ = 4π × 10⁻⁷ H/m)
- eWhat is de Broglie wave for a moving particle at temperature T?
- fShow that perfect diamagnetism is an essential property of the superconductor
- gA Fiber made of silicon with a diameter of the core is such that it consists of core and claddings refractive indexes of 1.40 and 1.37. Find the numerical aperture of Fiber
Section BAttempt any three of the following: 07 x 3 = 21
- aDerive the conditions of Maxima & Minima in reflected light in a thin film of uniform thickness
- bDerive differential form of Maxwell’s equations
- cDiscuss construction and working of He-Ne Laser
- dDerive Expression for diameter of dark ring in Newton’s rings
- eDescribe the experiment of Davisson and Germer to demonstrate the wave character of electrons
Section CAttempt any one part of the following: 07 x 1 = 07
- aExplain the construction and working principle of an optical fiber. Define acceptance angle and numerical aperture, and derive the relation between them
- bDerive change in wavelength in Compton scattering. Why Compton effect is not observed for visible light?
- aDerive relation between Einstein’s coefficients
- bState and Prove Poynting theorem
- aDiscuss Fraunhofer diffraction of light at a double slit and obtain the conditions for diffraction and interference maxima and minima
- bDerive the wave equations for electric and magnetic fields in vacuum using Maxwell’s equations. Discuss the transverse nature of electromagnetic waves and explain how the electric and magnetic fields are oriented with respect to the direction of propagation
- a(i) What are Newton's rings? Why are they circular in shape? Newton's rings are observed in reflected light of wavelength 5900 Å. The diameter of 10th dark ring is 0.50 cm. Find the radius of curvature of the lens. (ii)A monochromatic light of wavelength λ=600 nm is incident normally on a plane transmission g rating having 5000 lines per cm. At what angle will the first-order principal maximum be observed?
- bObtain the normalized wave function and energy Eigen values for a particle in a box
- aThe superconducting transition temperature of Lead is 7.26 K. The initial field at 0 K is 64 × 103 Amp m–1. Calculate the critical field at 5 K. What are nano materials? Explain briefly th e basic concepts of Quantum dot, Quantum wire and quantum well?
- bDescribe the Meissner effect and differentiate between Type I and Type II superconductors on the basis of their magnetic behavior
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.
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