Q. A point mass is placed inside a thin spherical shell of radius $R$ and mass $M$ at a distance $R/2$ from the centre of the shell. The gravitational force exerted by the shell on the point mass is
A) $\frac{GM}{2R^{2}}$
B) $- \frac{GM}{2R^{2}}$
C) Zero
D) $\frac{GM}{4R^{2}}$
Explanation
(c) Gravitational field inside hollow sphere will be zero
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.