1. (i) Why are solar heating devices painted black ?
2. (ii) Name two such devices and state two limitations of these.

answer

1) they are painted black so that it can absorb more heat as black is a good absorber of heat thereby cooking occurs more faster.

2) the name of the devices which are based on solar energy

Solar cookers
Solar cells


limitations

1)The initial cost of setting up these devices is very high
2) Food cannot be cooked during night
3) cooking takes a little more time thereby more specialized costly devices are used .