The ratio of the kinetic energy required to be given to a satellite so that it escapes the gravitational field of earth to the kinetic energy required to put the satellite in a circular orbit just above the free surface of earth is
A
1
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B
2
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C
3
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D
9
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Solution
The correct option is B2 E1=12mv2e,E2=12mv20 ∴E1E2=(vev0)2=2(∵ve=√2v0)