Two planets X and Y have masses in the ratio and radii in the ratio

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

Problem

Two planets X and Y have masses in the ratio

M_{\text{X}}:M_{\text{Y}} = 2:1

and radii in the ratio

R_{\text{X}}:R_{\text{Y}} = 1:2

. What is the ratio of their surface accelerations due to gravity

g_{\text{X}}:g_{\text{Y}}

? (a)

2:1

(b)

4:1

(c)

8:1

(d)

1:2