The masses of two planets are in the rat...

The masses of two planets are in the ratio `1 : 2`. Their radii are in the ratio `1 : 2`. The acceleration due to gravity on the planets are in the ratio

A

`1 : 2`

B

`2 : 1`

C

`3 : 5`

D

`5 : 3`

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The correct Answer is:

B

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