JEE Main 2021PhysicsRay OpticsEasyMCQ

JEE Main 2021 — Ray Optics Question with Solution

JEE Main 2021 (20 Jul Shift 1)

Question

Region I and II are separated by a spherical surface of radius 25 cm. An object is kept in region I at a distance of 40 cm from the surface. The distance of
the image from the surface is:

Choose an option

Show full solutionCorrect option: D
Correct answer
D37.58 cm

Step-by-step explanation

μ2v-μ1u=μ2-μ1R
1.4v-1.25-40=1.4-1.25-25
1.4v=-0.1525-1.2540
v=-37.58 cm
Hence option (4).

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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.