Question

The upper part of a box-type solar cooker has a glass cover. The reason for this is

(A) to see whether the food kept inside the cooker is being cooked or not

(B) to prevent loss of heat due to radiation

(C) to prevent the passage of dust into the box

(D) none of these

Answer 1

Correct option is (B) to prevent loss of heat due to radiation

The purpose of glass cover on top of a box type solar cooker, so that sun rays pass through the glass sheet cover and get absorbed inside the cooker box. It trap more and more heat rays and reduce heat loss by radiation.