GEO-STATIONARY SATELLITES
Gravitation

270624 A geo-stationary satellite is orbiting the earth at a height \(6 R\) above the surface of the earth, where \(R\) is the radius of earth. The time period of another satellite revolving around earth at a height \(2.5 \mathrm{R}\) from earth's surface is

1 \(12 \sqrt{2} \mathrm{hr}\)
2 \(12 \mathrm{hr}\)
3 \(6 \sqrt{2} h r\)
4 \(6 \mathrm{hr}\)