question_answer

Dependence of intensity of gravitational field (E) of earth with distance (r) from centre of earth is correctly represented by:

A)

B)  

C)           

D)

Correct Answer: A

Solution :

For a point inside the earth r<R \[\operatorname{E}=-\frac{GM}{{{R}^{3}}}r\] At a centre, r=0, E=0 For a point outside of earth r=R, \[\operatorname{E}=-\frac{GM}{{{R}^{2}}}\]