Question

A geo-stationary satellite is orbiting the earth at a height of 6 R above the surface of earth, R being the radius of earth. The time period of another satellite at a height of 2.5 R from the surface of earth is

• A. 10 hr
• B. $( 6 / \sqrt { 2 } ) h r$
• C. 6 hr
• D.

Answer 1

Answer: (D)

Answer 2

Distances of the satellite from the centre are 7R and 3.5R respectively.