Solar water heating panels are usually painted matt black. What is the reason for this?
Matt black surfaces are poor absorbers of radiant energy.
Matt black surfaces are good absorbers of radiant energy.
Matt black surfaces are good reflectors of radiant energy.
Matt black surfaces are good transmitters of radiant energy.
99 exam-style questions on CIE IGCSE Physics 2.3.3a Thermal radiation. Each one has a worked solution and a mark scheme showing where the marks go.