JEE Main 2019PhysicsRay OpticsEasyMCQ

JEE Main 2019 — Ray Optics Question with Solution

JEE Main 2019 (09 Apr Shift 1)

Question

A concave mirror for face viewing has a focal length of 0.4 m. The distance at which you hold the mirror from your face in order to see your image upright with a magnification of 5 is

Choose an option

Show full solutionCorrect option: C
Correct answer
C0.32 m

Step-by-step explanation

m=5=-vu        ⇒v=-5u
f=-0.4 m
From mirror formula,
1v+1u=1f
1-5u+1u=1-0.4
-1+55u=1-0.4
u=45-0.4=-0.32 m
So, distance of object from mirror=0.32 m

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About this question

This is a previous-year question from JEE Main 2019, 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.