Question

Why the pipes of solar heater and containers are painted black?

Answer 1

The pipes of solar heater and the containers of solar cooker is painted black because, it absorbs the sunlight . Black is the only color that absorbs all the visible spectrum wavelength light. So, black color is highly preferable for solar cooker.

Answer 2

Answer:

Explanation:

Pipes of solar heater are painted black so that any light falling on pipes will be absorbed by pipes and thus losses in heat will be minimised.