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, \[\operatorname{E}=-\frac{GM}{{{R}^{2}}}\]