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A particle of mass M is at a distance a ...

A particle of mass `M` is at a distance a from surface of a thin spherical shell of equal mass and having radius `a`.

A

Gravitational field and potential both are zero at centre of the shell

B

Gravitational field is zero not only inside the shell but at a point outside the shell also

C

Inside the shell, gravitational field alone is zero

D

Neither gravitational field nor gravitational potential is zero inside the shell

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The correct Answer is:
D
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