Which of the following is used in solar cookers? • A concave mir

SOLUTION

• A concave mirror is used in solar cookers because it is a converging mirror and it converges light rays coming from infinity to a point so that more heat is produced at the point sufficient to cook the food.

• The concave mirror works in the same way as the magnifying glass.

• 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.