A cylinder is of mass M, length L and radius R. if its moment of inertia about an axis passing through its centre and perpendicular to its axis is minimum, the ratio L/R must be equal to

Q: A cylinder is of mass M, length L and radius R. if its moment of inertia about an axis passing through its centre and perpendicular to its axis is minimum, the ratio L/R must be equal to

(a) $\frac{3}{2}$

(b) $\frac{2}{3}$

(c) $\sqrt{\frac{2}{3}}$

(d) $\sqrt{\frac{3}{2}}$

Ans: (d)