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Escape velocity of a body from the surfa...

Escape velocity of a body from the surface of earth is 11.2km/sec. from the earth surface. If the mass of earth becomes double of its present mass and radius becomes half of its present radius then escape velocity will become

A

`22.4` km/s

B

`44.8` km/s

C

`5.6` km/s

D

`11.2 `km/s

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The correct Answer is:
A
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