Which type of mirror is the best choice for use in a solar cooker?

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Concave

Convex

Plane

None of these

answer is A.

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Detailed Solution

Concave mirror is the best choice for use in a solar cooker.
The concave mirror is widely used in solar cookers as the concave mirrors concentrate light that hits them to a single focal point. As a result, in solar cookers, the concave mirror helps to absorb all incident sunlight and reflects it to a single focal point. The radiation at the focal point is highly intense due to the concentration of thermal energy. Once we place a cooking pot on the focal point of the light, the energy is powerful enough to cook food. Other mirrors, such as convex and plane mirrors, cannot be used in solar cookers since plane mirrors have no focal point, and a convex mirror’s focal point is situated behind the mirror. Making it difficult to focus energy.

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