The moment of inertia of a thin square plate ABCD of uniform thickness about an axis passing through the centre O and perpendicular to the plate.

Q: The moment of inertia of a thin square plate ABCD of uniform thickness about an axis passing through the centre O and perpendicular to the plate. Where I₁ , I₂ , I₃ , I₄ are moments of inertia about axes 1 , 2 , 3 and 4 which are in the plane of the plate.

(a) I₁ + I₂

(b) I₃ + I₄

(c) I₁ + I₃

(d) I₁ + I₂ + I₃ + I₄

Ans: (a) , (b)