Which one of the following plots represent 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)

Options

A.
B.
C.
D.

Answer

B

Explanation

`implies` Gravitational field intensity at distance r from the centre of spherical shell of radius R
`I= (GM)/r^2 ` (If `r gt R` )
At the surface of shell r = R
`:. F = (GM)/R^2`
For inside the shell ` r lt R`
F= 0