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Moment of inertia of a circular ring is given as:

1. MR²/4
2. MR²/2
3. 5MR²/4
4. 3MR²/2

Correct answer: MR²/2

Solution

The moment of inertia of a circular ring about its central axis is given by MR², where M is the mass and R is the radius. None of the options match this directly, but the correct formula for a ring about its diameter is MR²/2, which matches option B.

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