JEE Main 2025 — Rotational Motion Question with Solution
From: JEE Main 2025 (Online) 28th January Morning Shift
Question
The moment of inertia of a solid disc rotating along its diameter is 2.5 times higher than the moment of inertia of a ring rotating in similar way. The moment of inertia of a solid sphere which has same radius as the disc and rotating in similar way, is times higher than the moment of inertia of the given ring. Here, ________ Consider all the bodies have equal masses.
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Show full solutionCorrect answer: 4
Step-by-step explanation
Given, and
we know,
Now,
(As )
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This is a previous-year question from JEE Main 2025, 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.