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The orbital speed for an earth satellite...

The orbital speed for an earth satellite near the surface of the earth is `7km//sec`. If the radius of the orbit is `4` times the radius of the earth, the orbital speed would be

A

`3.5 km//s`

B

`7 km//s`

C

`7sqrt2 km//s`

D

`14 km//s`

Text Solution

Verified by Experts

The correct Answer is:
A

`V_(0)=sqrt((GM)/r)rArrV_(0)prop1/(sqrt(r))`
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