Question

give ans of this que​

Answer 1

Answer:

I) Black surfaces are excellent absorbers of radiation and helps in trapping more heat inside a solar cooker, hence improving the efficiency.

2)The sun rays pass through the glass sheet cover and get absorbed inside the cooker box. It traps more and more heat rays of the sun, thus it is helpful in heating the food item.

3)Because it helps in absorbing heat soon and it is a good reflector