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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 slightly, its speed of rotation will [MHT-CET 2013, MHT-CET 2013]

Answer: (B)

Solution

On heating, the length increases so the moment of inertia increases; with no external torque is

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Question ID VK-041091