The escape velocity from the earth is 11...

The escape velocity from the earth is `11 km//s`. The escape velocity from a planet having twice the radius and same density as that of the earth is (in `km//s`)

A

`5.5 kms^(-1)`

B

`11 kms^(-1)`

C

`22 kms^(-1)`

D

None of these

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The correct Answer is:

C

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