Q. A solid sphere and a hollow sphere of the same material and of a same size can be distinguished without weighing
A) By determining their moments of inertia about their coaxial axes
B) By rolling them simultaneously on an inclined plane
C) By rotating them about a common axis of rotation
D) By applying equal torque on them
Explanation
(b) Time of descent will be less for solid sphere $i.e.$ solid sphere will reach first at the bottom of inclined plane
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.