A plot of gravitational field v/s distance for a solid sphere of radius R, follows a straight line graph for certain range of distance. The field was determined for

at the centre of the sphere

r = 0 to r = R

r = R to r = Infinity

a point on the surface

A

at the centre of the sphere

B

r = 0 to r = R

C

r = R to r = Infinity

D

a point on the surface

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Solution

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The field is found to increase from r =0 to r = R and at r =R, the field is maximum. The field starts reducing from r = R to infinity and becomes zero at r = infinity

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