Question

$P$ is a point at a distance $r$ from the centre of a solid sphere of radius $R_{0}$. The gravitational potential at $P$ is $V$. If $V$ is plotted as a function of $r$, then the curve representing the plot correctly is:

• A.
• B.
• C.
• D.

Answer 1

Answer: (D)

Gravitational potential at a distance $r$ outside a uniformly charged solid sphere varies inversely with $r$ and inside it is given by the expression $\left(K Q / 2 R^{3}\right)\left(3 R^{2}-r^{2}\right)$ hence option (D) is correct.