question_answer

Starting from the centre of the earth having radius R, the variation of g (acceleration due to gravity) is shown by

A)           

B)  

C)         

D)   

Correct Answer: B

Solution :

            \[gin=\frac{GMr}{{{R}^{3}}}\Rightarrow \,gin\,\alpha \,r\]             \[g\,out=\frac{GM}{{{r}^{2}}}\Rightarrow g\,out\,\alpha \,\frac{1}{{{r}^{2}}}\]