1.

(a) Why are solar heating devices painted black ? (b) Name two such devices and state two limitations of these.

Answer»

SOLUTION :(a) Black bodies are good absorbers of heat, so temperature rises quickly.
(b) TWO devices-Solar COOKER, Solar water heater.
Two limitations :
(i) Cannot be used at night.
(ii) HEATING PROCESS is very slow.


Discussion

No Comment Found