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The K.E. of a satellite in an orbit clos...

The `K.E.` of a satellite in an orbit close to the surface of the earth is `E`. Its max `K.E.` so as to escape from the gravitational field of the earth is

A

`2E`

B

`4E`

C

`2sqrt(2)`

D

`sqrt(2)E`

Text Solution

Verified by Experts

The correct Answer is:
A

`(K_(e))/(K_(o))=(2gR)/(gR)rArr K_(e)=2K_(0)`
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