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Question

Find vevo where
ve: Escape velocity of satellite at the surface of earth.
vo: Orbital velocity of satellite orbiting at the surface of earth.


A
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B
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C
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Solution

The correct option is B

Escape velocity at surface of earth is given by:
ve=2GMR

Orbital velocity of satellite at height h above the surface of earth is given by:
vo=GMR+h
At surface of earth, h=0
vo=GMR

From above,
vevo=2GMRGMR=2


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