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The escape velocity for the earth is v(e...

The escape velocity for the earth is `v_(e)`. The escape velocity for a planet whose radius is four times and density is nine times that of the earth, is

A

`36v_e`

B

`12v_e`

C

`6v_e`

D

`20v_e`

Text Solution

Verified by Experts

The correct Answer is:
B
`v_e=Rsqrt(8/3piG9p)`
`rArrv_e.=4Rsqrt(8/3piG_p^9)=v_e.=12v_e`
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