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The escape velocity of a sphere of mass ...

The escape velocity of a sphere of mass m is given by (G= univesal gravitational constant, `M_(e) =` mass of the earth and `R_(e) =` radius of the earth)

A

`sqrt((2GM)/R)`

B

`2sqrt((GM)/R)`

C

`sqrt((2GMm)/R)`

D

`sqrt((GM)/R)`

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The correct Answer is:
A
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