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Question

The orbital velocity of an artificial satellite in a circular orbit of a height R above earth's surface is v (R is radius of earth). The orbit velocity of a satellite orbiting at an altitude 2R above the earth's surface will be:

A
v/2
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B
32v
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C
23v
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D
23v
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Solution

The correct option is B 23v
Orbital velocity =GMr
Where r is the distance of satellite from the centre of earth.
V=GM2R
V1=GM3R×22
V1=23GM2R
V1=23V

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