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Two satellites X and Y are moving in cir...

Two satellites X and Y are moving in circular orbits of radii R and 2R respectively, around the same planet. What is the ratio of their critical velocities ?

A

`sqrt(2) : 1`

B

`sqrt(3) : 1`

C

`1 : (1)/(sqrt(2))`

D

`1 : 2`

Text Solution

Verified by Experts

The correct Answer is:
A
`(V_(x))/(V_(y))=sqrt((GM)/(R )xx(2R)/(GM))=sqrt(2)`
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