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Intensity of gravitational field due to a spherical shell at any point at a distance $r$ from the centre of the sphere inside the sphere will be equal to -
Option: 1
$\frac{Gm}{R^2}$

Option: 2
$\frac{Gm}{}R$

Option: 3
$\frac{Gm}{r^2}$

Option: 4
zero

Answers (1)

best_answer

As we have learnt,

Gravitational field Intensity due to spherical shell/hollow sphere -

For Spherical shell

$R\rightarrow$ Radius of shell

$r\rightarrow$ Position of Pt.

$M\rightarrow$ Mass of spherical shell

Inside the surface

$r<R$

$I=0$

on the surface

$r=R$

$I= \frac{GM}{R^{2}}$

Outside the surface $r>R$

$I= \frac{GM}{r^{2}}$

So , Intensity due to a spherical shell at inside points is always zero.

Posted by

Devendra Khairwa

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