Question

The radiations present in sunlight which make a solar cooker work are:
A. Infrared rays
B. Ultraviolet rays
C. Visible light rays
D. Microwaves

Answer 1

Hint: We can see that in the above question, there are four options given. At first, we need to find out that which are the options which satisfy the question, that is the question is asking to find the radiations in sunlight so we need to know all the radiations produced by the sunlight, now we have to check that all the options are there or not if no any option mismatches it is already of the options section. After this, we have to compare the characteristics of all the rays that are left to find the answer.

Complete answer:
A solar cooker is nothing but a device that can cook with the help of the heat it gets from the sun rays. There are solar panels in the solar cooker which convert the solar energy to heat energy, this conversion is generally done using the silicon cells that are present in the mirrors.

Sunlight is the light that is generated by the sun, it consists of infrared rays, visible light rays, and UV rays as well.
UV rays cannot reach the earth so it cannot be used in a solar cooker.
So, we are left with two options that are visible light and Infrared ray, lets see which one will be correct.
Visible light rays cannot produce enough heat to cook food.
So we can say that the infrared rays are the main reason for the working of a solar cooker, it provides a good amount of energy/heat to cook food using a solar cooker.

So, the correct answer is “Option A”.

Note:
We know that there is a layer that surrounds the earth and that layer is known as the ozone layer, and this layer is the reason why UV rays are filtered out in large proportion so UV rays can’t help us to cook using a solar cooker.