Let I be the moment of inertia of a uniform square plate about an axis AB that passes through its centre and is parallel to two of its sides . CD is a line in the plane of the plate that passes through the centre of the plate and makes an angle θ with AB. The moment of inertia of the plate about the axis CD is then equal  to

Q: Let I be the moment of inertia of a uniform square plate about an axis AB that passes through its centre and is parallel to two of its sides . CD is a line in the plane of the plate that passes through the centre of the plate and makes an angle θ with AB. The moment of inertia of the plate about the axis CD is then equal  to

(a) I

(b) I sin² θ

(c) I cos² θ

(d) I cos² (θ/2)

Ans: (a)