Point is at a distance from the centre of Earth

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

Point

X

is at a distance

d

from the centre of Earth.

d

is larger than the radius of Earth. The gravitational field strength at

X

g_X

. Point

Y

is at a distance

3d

from the centre of Earth. What is the difference in the magnitudes of gravitational field strengths between

X

and

Y

? (1) A.

\frac{8g_X}{9}

(2) C.

\frac{g_X}{4}

(3) D.

\frac{g_X}{9}