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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

Two uniform wires forms two circular loops. 'p' of radius r and 'Q' of radius r such that moment of inertia of P about central axis is of that of Q about the same central axis perpendicular to plane. The value of is (Assume diameter of wire very small)

Answer: (D)

Solution

For wires of the same material the mass is proportional to the radius, so and

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Question ID VK-040384