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The orbital velocity of a body at height...

The orbital velocity of a body at height h above the surface of Earth is 36% of that near the surface of the Earth of radius R. If the escape velocity at the surface of Earth is `11.2 km s^-1`, then its value at the height h will be

A

`11.2 km s^-1`

B

`sqrt(h/R) xx 11.2 km s^-1`

C

`9/25 xx 11.2 km s^-1`

D

`sqrt(R/h) xx 11.2 km s^-1`

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