Q. Select the proper graph between the gravitational potential ($v_{g}$) due to hollow sphere and distance ($r$) from its centre
A) [image:8_image25.emf]
B) [image:8_image26.emf]
C) [image:8_image27.emf]
D) [image:8_image28.emf]
Explanation
(c) Gravitational potential at a pint outside the sphere $V_{g} = \frac{- GM}{r}$. But $V_{s}$ is same at a point inside the hollow sphere as on the surface of sphere. Hence, graph (c) is correct.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.