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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

Two thin uniform circular rings each of radius 10 cm and mass 0.1 kg are arranged such that they have a common centre and their planes are perpendicular to each other. The moment of inertia of this system about an axis passing through their common centre and perpendicular to the plane of one of the rings (in ) is

Answer: (A)

Solution

That axis is the axis of the first ring () and a diameter of the second ():

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Question ID VK-040696