Two identical metal cylinders, containing the same mass of hot oil at the same initial temperature, are suspended inside a highly evacuated chamber with cold, dark walls. One cylinder has a highly polished metallic outer surface, while the other has a matte black outer surface.
Which statement correctly describes how the temperature of the oil in each cylinder changes?
The temperature of the oil in both cylinders does not change.
The oil in the polished cylinder cools down more slowly than the oil in the matte black cylinder.
The oil in the matte black cylinder cools down more slowly than the oil in the polished cylinder.
The oil in both cylinders cools down at the same rate.
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.