Two spherical planets have the same mass but densities in the ratio 1:8. For these planets, the
(a) acceleration due to gravity will be in the ratio 4:1
(b) acceleration due to gravity will be in the ratio 1:4
c) escape velocities from their surfaces will be in the ratio `sqrt2:1`
d) escape velocities from their surfaces will be in the ratio `1:sqrt2`

Options

A. only b&d are true
B. only b&c are true
C. only a,c&d are true
D. only a&b are true

Answer

A