Question

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 

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

Medium
Solution
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Correct option is B)

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

A straight line plot indicates the field is increasing and this is observed for the region between r=0 to r=R

The correct option is (b)

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