Question

V1) why are solar heating device painted black 2)name two such device andstate two limitation of these

Answer 1

1A)Black is the best absorber of heat so any solar heating device is painted black.
2A)Solar heating devices are solar cells & solar cookers
solar cells-highly expensive
                  cannot store energy for longer time
solar cooker-slow cooking
                     cannot be used on a cloudy/windy day

Answer 2

Answer:

a . solar heating devices are painted black .because ,black colour abrorbs heat and painting balck would be helpful to heat the device fast

b. solar cooker . takes time to cook food

cannot be used on cloudy and windy days usually helpful for summers