Question

Assertion : The moment of inertia of a rigid body reduces to its minimum value, when the axis of rotation passes through its centre of gravity.
Reason : The weight of a rigid body always acts through its centre of gravity.
A. If both, Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B. If both, Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. If Assertion is true but the Reason is false.
D. If both, Assertion and Reason are false.

Answer 1

Correct Answer - A
Both, the assertion and reason are true and the latter is correct explanational of the former. This follows from the theorem of parallel axes on moment of inertia.