A uniform rod is lying on a horizontal table and it is hinged at one end. A body collides with the rod such that the collision is elastic then

I) Conservation of momentum is applicable
II) Conservation of angular momentum is applicable about hinged point
III) Conservation of mechanical energy is applicable

I, II are correct

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I, II, III all are correct

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Only III is correct

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Only II & III are correct

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Solution

The correct option is D Only II & III are correct
External force at the hinged point is non-zero, so momentum conservation is not possible.

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The correct option is D Only II & III are correctExternal force at the hinged point is non-zero, so momentum conservation is not possible.

The correct option is D Only II & III are correct
External force at the hinged point is non-zero, so momentum conservation is not possible.