JEE Main 2002 — Rotational Motion Question with Solution
From: AIEEE 2002
Question
Moment of inertia of a circular wire of mass and radius about its diameter is
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Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
Moment of Inertia of a circular wire about an axis passing through the centre of the circle and perpendicular to the plane of the circle
As shown in the figure, -axis and -axis lies in the plane of the ring. Then by perpendicular axis theorem
as (by symmetry) and
As shown in the figure, -axis and -axis lies in the plane of the ring. Then by perpendicular axis theorem
as (by symmetry) and
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This is a previous-year question from JEE Main 2002, 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.