Earth’s radius is

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

Problem

Earth’s radius is

R

. Consider point P at an altitude of

300\,\text{km}

above the surface and point Q at a depth of

300\,\text{km}

below the surface. Which one of the following correctly compares the magnitudes of acceleration due to gravity

g_P

and

g_Q

? (a)

g_P = g_Q

(b)

g_P < g_Q

(c)

g_P = g

(d)

g_P > g_Q