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The orbital velocity of an artifical sat...

The orbital velocity of an artifical satellite in a cirular orbit above the earth's surface at a distance equal to radiu of earth is v. For a satellite orbiting at an altitude half of earth's radius, orbital velocity is

A

`v//2`

B

`(3)/(2)v`

C

`(2)/(3)v`

D

`sqrt((2)/(3))v`

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The correct Answer is:
D
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