Which of the following is/are correct about solar cooker? 1. Solar cookers achieve a higher temperature by using mirrors to focus the rays of the Sun. 2. It works on the principle that a black surface absorbs more heat. Choose the correct option from the codes given below:

Options

A. only 1
B. only 2
C. both 1 and 2
D. neither 1 and 2

Answer

c

Explanation

A black surface absorbs more heat as compared to a white or a reflecting surface under identical conditions. Solar cookers and solar water heaters use this property in their working. Some solar cookers achieve a higher temperature by using mirrors to focus the rays of the Sun. Solar cookers are covered with a glass plate.