Question

3. Give reason that the containers of Solar Cooker are

painted black?

4. Differentiate between uniform and non-uniform motion?​

Answer 1

Answer:

The pipes and containers are painted black so that they can absorb maximum heat from the solar radiation. the black surface is a good absorber of thermal radiation.

The basic difference between uniform and non uniform motion is that: In uniform motion, a body moves with a constant speed such as Motion of earth around the sun. While in non-uniform motion a body moves with a variable speed such as Horse running in the race.