Question

Draw a labeled diagram of a solar cooker. What purposes are served by the blackened surface, glass cover plate, and mirror in a solar cooker? What would happen if the plane glass mirror of a solar cooker is replaced by a concave glass mirror?

Answer 1

Hint: This is a theoretical question, based on the concept of the applications of solar energy, that is, a solar cooker. Thus, we will draw a diagram of a solar cooker consisting of the parts blackened surface, glass cover plate, and the mirror.

Complete step-by-step solution
The labeled diagram of the solar cooker is given as follows.

The solar cooker is made up of components such as the blackened surface, glass cover plate, and mirror.
Now, we will define the purposes served by the components of the solar cooker.
The blackened surface: The surface of a solar cooker is colored black in order to make the utensil absorb more of the heat energy. This will help the food to be cooked at a faster rate.
The glass cover: This glass cover traps the solar rays entering the solar cooker, that is, this glass cover does not allow the sun rays to escape.
The mirror: To concentrate or to converge the sun rays to a fixed point, in the case of a solar cooker, the fixed point will be the food that needs to be heated. When the rays get concentrated at a point, the more amount of heat gets collected at a point which helps the food to be cooked at a faster rate.
The intensity of the sun rays gets reduced when the plane glass mirror of a solar cooker is replaced by a concave glass mirror.
$\therefore$ The labeled diagram of the solar cooker and the working of its components.

Note: This is a direct question. As the solar cooker is one of the applications of solar energy, so, they can even ask for the other application of solar energy. The purposes of the components of solar energy should also be known.