Q. Which of the following is an essential condition for geostationary satellites of earth?

Explanation by: Chandani

Essential condition for geostationary satellites of earth:
Its sense of rotation should be the same as that of earth i.e. it should rotate from west to east.
It should be at a height of nearly 36000 km above the equator.
Its period of revolution should be 24 hours.
it should revolve in an orbit concentric and coplanar with the equatorial plane.
Its orbital velocity is nearly 3.1 km/s