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The densities of two planets are in the ...

The densities of two planets are in the ratio of 2 : 3 and their radii are in the ratio of 1 : 2. What is the ratio of acceleration due to gravity at their surfaces ?

A

`1:3`

B

`3:1`

C

`1:9`

D

`9:4`

Text Solution

Verified by Experts

The correct Answer is:
a
`(g_(2))/(g_(1))=(rho_(2))/(rho_(1))(R_(2))/(R_(1))=(2)/(3)xx(1)/(2)=(1)/(3)`
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