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An artificial satellite is revolving rou...

An artificial satellite is revolving round the Earth in a circular orbit, its velocity is half the eacape velocity. Its height from the Earth surface is`.........` km.

A

6400

B

12800

C

3200

D

1600

Text Solution

Verified by Experts

The correct Answer is:
A
`V = sqrt((GM)/(R+h)) =1/2 sqrt((2GM)/R) rArr h = R = 6400 R `
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