Torque `(vec tau)` acting on a rigid body is defined as `vec tau = vec A xx vec L`, where `vec A` is a constant vector and `vec L` is angular momentum of the body. The magnitude of the angular momentum of the body remains same.
`vec tau` is perpendicular to `vec L` and hence torque does not deliver any power to the body.
A. Statement-1 is True, Statement-2 is Ture , Statement -2 is a correct explanation for statement -1.
B. Statement-1 is True, Statement-2 is True , Statement-2 is NOT a correct explanation fro Statement -1.
C. Statement-1 is True, Statement-2 is False.
D. Statement-1 is False, Statement-2 is True.