If `v_(0)` be the orbital velocity of an articial satellite orbital velocity of the same satellite orbiting at an altitude equal to earth's radius is

Options

A. `v//sqrt2`
B. `v//2`
C. `sqrt2v`
D. `2v`

Answer

a

Explanation

`(V_(C_(2)))/(V_(C_(1)))=sqrt((r_(1))/(r_(2)))=sqrt((R)/(R+h))=sqrt((R)/(2R))=(1)/(sqrt2)`
`V_(C_(2))=(v)/(sqrt2).`