Question

A solar cooker may not cook food if :
(a) the solar cooker is not placed in the shade (b) the glass sheet cover of solar cooker is not closed
(c) a convex mirror reflector is not used (d) the food containers of insulating material are not used

Answer 1

the glass sheet cover of solar cooker is not closed


Solar cookers are covered with a glass plates in order to capture heat. More and more heat is captured. Just like the green house effect, the glass plate does not allow the heat to escape. Thus cooking of food is done efficiently.