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Critical velocity of a satellite orbitin...

Critical velocity of a satellite orbiting around the earth (radius R) at a distance of 8 R from the surace is 2.5 km/s. Critical velocity of another satellite orbiting at a height of 15 R from the surface is

A

1.40 km/s

B

1.87 km/s

C

4.44 km/s

D

3.33 km/s

Text Solution

Verified by Experts

The correct Answer is:
b
`(V_(C_(2)))/(V_(C_(1)))=sqrt((r_(1))/(r_(2)))=sqrt((9R)/(16R))=(3)/(4).`
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