JEE Main 2021PhysicsRotational MotionEasyMCQ

JEE Main 2021 — Rotational Motion Question with Solution

JEE Main 2021 (24 Feb Shift 1)

Question

Moment of inertia M.I. of four bodies, having same mass and radius, are reported as;

I1=M.I. of thin circular ring about its diameter,

I2=M.I. of circular disc about an axis perpendicular to disc and going through the centre,

I3=M.I. of solid cylinder about its axis and

I4=M.I. of solid sphere about its diameter.

Then:

Choose an option

Show full solutionCorrect option: C
Correct answer
CI1=I2=I3>I4

Step-by-step explanation

Ring I1=MR22 about diameter

Disc I2=MR22

Solid cylinder I3=MR22

Solid sphere I4=25MR2

I1=I2=I3>I4

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About this question

This is a previous-year question from JEE Main 2021, covering the Rotational Motion 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.