JEE Main 2021PhysicsRay OpticsEasyMCQ

JEE Main 2021Ray Optics Question with Solution

JEE Main 2021 (25 Jul Shift 2)

Question

A prism of refractive index μ and angle of prism A is placed in the position of minimum angle of deviation. If minimum angle of deviation is also A, then in terms of refractive,

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Show full solutionCorrect option: A
Correct answer
A2cos-1μ2

Step-by-step explanation

μ=sinA+δmin2sinA2

μ=sinA+A2sinA2

μ=sinAsinA2=2cosA2

A=2cos-1μ2

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About this question

This is a previous-year question from JEE Main 2021, covering the Ray Optics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.