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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

A uniform metallic rod rotates about its perpendicular bisector with constant angular speed. If it is heated uniformly to raise its temperature to a certain value, its speed of rotation [MHT-CET 2022, MHT-CET 2022]

Answer: (D)

Solution

On heating the length increases, so increases and, with no external torque, is conserved, so

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Question ID VK-040912