JEE Main 2022PhysicsRay OpticsEasyMCQ

JEE Main 2022 — Ray Optics Question with Solution

JEE Main 2022 (28 Jun Shift 1)

Question

The refracting angle of a prism is A and refractive index of the material of the prism is cotA2. Then the angle of minimum deviation will be

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Show full solutionCorrect option: A
Correct answer
A180°-2A

Step-by-step explanation

As we know, angle of minimum deviation is given by, ⇒μ=sinδm+A2sinA2

⇒cotA2=sinδm+A2sinA2

⇒cosA2sinA2=sinδm+A2sinA2

⇒sin90°-A2=sinδm+A2

Therefore, 90°-A2=δm+A2  ⇒δm=180°-2A

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About this question

This is a previous-year question from JEE Main 2022, 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.