Which of the following graphs correctly represents the variation of g on the - Earth?

Options

A.
B.
C.
D.

Answer

B

Explanation

The variation of g with distance r from the centre of the Earth is as follows :
For `r lt R`
`g=(GMr)/R^3" or "g propr`
For `r geR,`
`g=(GM)/r^2" or "g r prop1/r^2`
Thus, graph (b) correctly represents the variation of g on the Earth as shown in the figure above .