Question

Which one of the following plots represents the variation of gravitational field on a particle with distance $r$ due to a thin spherical shell of radius $R$ ? ($r$ is measured from the centre of the spherical shell)

• A.
• B.
• C.
• D.

Answer 1

The correct option is C


Gravitational field inside the spherical shell is zero.
And gravitational field outside the spherical shell at a distance $r$ from the centre of the spherical shell is $F=\frac{GMm}{r^2}$
On the surface, $r=R$
and outside the shell, $r>R$