Question

Prateek's mother decided to cook food in a solar cooker but she found that food cannot be cooked in that solar cooker. What might be the reason for the same?

• A. Interior of the box and the container of food are perfectly shining.
• B. Glass sheet over the box is not closed.
• C. Solar cooker is placed in the shade.
• D. All the above.

Answer 1

The correct option is D

All the above.

Solar cooker consists of a rectangular box which is made up of material such as plastic or wood. The box is covered with a black sheet and its inner walls are painted black to increase heat absorption.

Solar cookers are covered with a glass plate and have mirrors to focus the rays of the sun and achieve a higher temperature. The light reflected from the plain mirrors concentrates the solar energy inside the solar cooker which generates enough heat to cook food.