A copper plate has a shiny finish on one face and a dull black coating on the other. It is heated until it reaches a high temperature. A person holds his hands at the same distance from both sides of the plate, near to it but without touching it. Explain why the hand next to the dull black face becomes much hotter than the hand next to the shiny face.
- AThe dull black surface is a better emitter of radiation than the shiny surface.
- BThe dull black surface is a better conductor of radiation than the shiny surface.
- CThe dull black surface is a better reflector of radiation than the shiny surface.
- DThe dull black surface is at a higher temperature than the shiny surface.