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why is concave mirror used to make solar heater?Give reason​

Sagot :

Concave mirror is used to make to solar heater because it can converge light of sun in a small area

hope it helps

The shape of concave mirrors catches and directs the sun light inward which provides greater heat retention. This allows the heating system to achieve a higher temperature and be better suited to heat your entire home. A flat or convex mirror would reflect a lot of the light outward, thus making those shapes less efficient for gathering solar heat.

Concave mirrors absorb all the incident light and reflect it to a single focal point. This reflected light is very powerful because it carries a lot of thermal energy. The cooking pot is placed on the focal point where the light is concentrated. The energy is powerful enough to smelt weak metals and melt salt.