Which of the following statement is correct about satellites?

Options

A. A satellite can not move in a stable orbit in a plane passing through the earth's centre
B. Geostationary satellites are launched in the equatorial plane
C. We can just geostationary satellite for global communication around the globle
D. The speed of a satellite increases with an increase in the radius of its orbit.

Answer

B

Explanation

Orbital velocity, `upsilon_(0) = sqrt((GM)/(r ))` and `T = (2pi r)/(upsilon_(0))`.
If `r` increases, `upsilon_(0)` decreases. For geostationary satellite, if `r` increases, `upsilon_(0)` also increases for a fixed value of `T`. i.e., for geostationary satellite the speed of a satellite increases with an increases in the radius of its orbit. in fact, a geostationary satellite is launches in the equatorial plane.