Gravitation - Result Question 29
30. 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)
[2012M]
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 30. (b)
Solution:
- (b) The Gravitational field due to a thin spherical shell of radius $R$ at distance $r$.
$E=\frac{G M}{r^{2}}($ If $r>R)$ For $r=R$ i.e., on the surface of the shell
$ E=\frac{G M}{R^{2}} $
For $r<R$ i.e., inside the shell
$ E=0 $
