1.

The acceleration due to gravity is g at a point distant r from the centre of earth of radius R. If \[r

A.    \[g\propto r\]
B.   \[g\propto {{r}^{2}}\]
C.    \[g\propto {{r}^{-1}}\]
D.   \[g\propto {{r}^{-2}}\]
Answer» B.   \[g\propto {{r}^{2}}\]


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