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Q.

The orbital velocity of an artificial satellite in a circular orbit just above the earth’s surface is v0. The orbital velocity of satellite orbiting at an altitude of half of the radius is :

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a

23v0

b

23v0

c

32v0

d

32v0

answer is C.

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Detailed Solution

Orbital velocity of satellite, v=GMR=v0

∴   v'=GMR+R2=2GM3R=23v0.

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