What are polar satellites? Give their uses

Explanation

Polar satellites
A satellite that revolves in a polar orbit is called a polar satellite. It is a low altitude satellite.
Uses of polar satellite
(i) These are used for remote sensing
(ii) These are used for meteorology and environmental studies of earth
(iii) These are used in spying work for military purposes.
(iv) These are used to study topography of Moon, Venus, Mars etc.