Question

Why is the concave mirror used in a solar cooker

Answer 1

they are the only types of mirrors that reflect sunlight in towards a single focal point. If you use a convex mirror for your cooker, it will not work since they do not have a focal point. A convex mirror reflects light to an imaginary point that exists behind the surface of the mirror. This will make the light reflect up and away from the convex mirror focal point. A flat mirror, on the other hand, doesn’t have a focal point; it reflects off all of its lights on different points meaning that it cannot be used to harness solar energy.

Answer 2

Explanation:

A concave mirror is used in a solar cooker as it uses heat of the sunlight to cook food. The mirror focuses all the incident sunlight at a point. The temperature at that point increases, thereby cooking and heating the food placed at that point.