question_answer

The moment of inertia of a circular disc of mass and radius R about an axis passing through the centre of mass is\[{{I}_{0}}\]. The moment of inertia of another circular disc of same mass and thickness but half the density about the same axis is

A)  \[\frac{{{I}_{0}}}{8}\]

B) \[\frac{{{I}_{0}}}{4}\]

C) \[8{{I}_{0}}\]

D) \[2{{I}_{0}}\]