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A uniform sphere of mass M and radius...

A uniform sphere of mass M and radius R is surrounded by a concentric spherical shell of same mass but radius 2R. A point mass is kept at a distance `x ( gt R)` in the region bounded by spheres as shown in the figure . The net gravitational force on the particle is

A

`(GMm)/(x^(2))`

B

`(GMmx)/(R^(3))`

C

`(G(M=m))/(x^(2))`

D

Zero

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The correct Answer is:
A
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