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JEE PHYSICS MCQ: SYSTEM OF PARTICLES

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There are two identical balls of same material, one being solid and the other being hollow. How will you distinguish them without weighing?

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Correct option: D

By any one of these methods

Option D (By any one of these methods) is correct because the moment of inertia is different for solid and hollow balls of the same mass and material, affecting their rotational motion when spun, rolled, or their moment of inertia is directly measured.

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are related as : A solid metal ring and a disc of same radius and mass are rotating about their diameters with same angular frequency. The ratio of their respective rotational kinetic energy values is When a torque acting upon a system is zero, then which of the following will be constant A point particle of mass

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t = 1\,sec

\left( {rad\,{s^{ - 2}}} \right)