Question

How is heat generated in a solar cooker to cook food?
A. Light reflected from the plane mirror concentrates solar energy inside the solar cooker.
B. Light refracted from the plane mirror concentrates solar energy inside the solar cooker.
C. Light deflected from plane mirror concentrates solar energy inside solar cooker
D. none

Answer 1

Hint: The above problem can be resolved by applying the concept of reflection by a plane mirror or the concave mirror as the plane mirror finds the major application in the solar cooker to focus the light rays on causing heating.

Complete step by step answer:
The solar cookers are the special thermal arrangement that is used to convert the radiations coming from the sun directly into the heat, and after that the heat is utilised for the purpose of cooking.
As per option A, the light reflected from the plane mirror or the concave mirror that is placed at the top cover of the cooker. In this portion, the reflection takes place and the reflected light from the mirrors concentrates the light onto a point where the food is exactly placed.
As per option B, the refraction from the plane mirrors cannot cause the heating effect to concentrate over the food, because refraction is the bending of the radiations from the edges of the mirror.
And as per the option C the deflection cannot be the reason for the heating, because the concentration of light rays will not take place.
Therefore, the light will undergo reflection from the plane mirror to get concentrated in the form of solar energy inside the cooker to cook food and option A is the correct option.

Note:Try to understand the concept of reflection along with the application of reflection of light. The solar cooker finds one of the major applications of the reflection of light. Moreover, the cooking of food is possible due to the heating effect caused by the focusing of radiation.