InterviewSolution
Saved Bookmarks
| 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. |
|