Question

Why solar cooker shape is in concave shape

Answer 1

Answer:

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

Answer 2

Concave shaped mirror is used in the solar cooker because -

• We need to convert the solar rays into significant amount of heat energy for the proper operation of a solar cooker.
• For this, we need to converge the solar rays into a single focal point which will gradually create the necessary heat energy.
• Now, only the concave mirror has the capabilities to reflect the solar rays in such a way that it gets converged into a single focal point.
• Convex mirror doesn't have such reflective properties and that's why convex mirrors are not used in the solar cooker.