A communication satellite is revolving around the earth very close to the surface of the earth of radius R . Then the period of communication satellite depends upon

Options

A. mass of the satellite
B. radius of the earth
C. mass of the satellite and the radius of the earth
D. height of the satellite and mass of the earth

Answer

B

Explanation

For a communication satellite.
`T = 2pi sqrt((R+h)/(g'))`
In this case, it is orbiting very close to the surface of the earth.
`therefore h = 0` and `g'=g`
`therefore T = 2pi sqrt((R )/(g))`
Thus T depends upon the radius of the earth (R ).