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Inside a uniform sphere of mass M and ra...

Inside a uniform sphere of mass M and radius R, a cavity of radius `R//3`, is made in the sphere as shown :

A

Gravitational field inside the cavity is uniform

B

Gravitational field inside the cavity is non-uniform

C

The escape velocity of a particle projected from point A is `sqrt((88GM)/(15R))`

D

Escape velocity is defined for earth and particle system only

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The correct Answer is:
A
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