Question

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

• A.
• B.
• C.
• D.

Answer 1

The correct option is B



For a point inside the earth r < R
$E=\frac{GM}{R^3}r$
At a centre, r = 0, E = 0
For a point outside earth r > R, $E=\frac{GM}{R^2}$
On the surface of earth r = R,
$E=\frac{GM}{R^2}$