First slide

Gravitational field intensity

Question

Which one of the following graphs represents correctly the variation of the gravitational field (F) with the distance (r) from the centre of a spherical shell of mass M and radius a

Moderate

A
B
C
D

Solution

Intensity will be zero inside the spherical shell.
I = 0 upto r = a and $I \propto \frac{1}{r^{2}}$ when $r > a$

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