Which among the following waves is used for communication by artificial satellites ?

A. Micro waves
B. Radio waves
C. A. M.
D. Infra-red waves

Explanation:

The microwaves are preferred in order to communicate with the artificial satellites which are orbiting the earth at a particular height from the surface of the earth. The microwaves are preferred because they can penetrate through the Earth’s atmosphere very easily and reach the target satellite.