A metal block at a high temperature emits thermal radiation into its surroundings. Which two properties of the block determine the rate at which it radiates this thermal energy?
the mass and the specific heat capacity of the block
the density and the surface area of the block
the surface area and the surface temperature of the block
the thermal conductivity and the volume of the block
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.