Out of two solar cookers, one was covered by a plane glass slab and the other was left open. Which of the two solar cookers will be more efficient and why ?

Two students made box-type solar cookers separately. They both painted the insulated box with black colour from inside, the cooking pots were painted black from outside, and a plane mirror reflector was also attached. One of the students covered the solar cooker box with a transparent glass sheet but the other student covered the solar cooker box with a transparent plastic sheet. Which of the two solar cookers will be more efficient and why ?

Which part of the solar cooker is responsible for greenhouse effect ?

Which part of the solar cooker is responsible for greenhouse effect ?

Which is the energy source of solar cooker

Explain why: Solar cookers are covered with glass plate.

Explain why: Solar cookers are covered with glass plate.