Question

Describe an experiment to show that a black (or dull) surface is a better absorber of heat radiations than a polished one.

Answer 1

When heat radiation fall on polished surface or white objects, most of the heat energy is reflected black but when these heat energy are absorbed and very less amount of energy is reflect back apart from this black body absorbs more heat because black colours absorbs all colours of light energy, the more light is absorbed, the more heat will be absorbed.