Four identical copper cubes are painted with different paints. Now if all the cubes are heated to the same temperature and are left in vacuum, which cube will lose heat more rapidly? The colours of the cubes are
A)Pale blue
B)37,500 kg
C)Shiny black
D)Dull red
E)shiny white

Question

Quizplus · Accepted Answer

Shiny black surfaces are the best emitters of heat. Therefore, a shiny black cube will lose heat more rapidly compared to cubes of other colors when they are all heated to the same temperature and left in a vacuum.

Four Identical Copper Cubes Are Painted with Different Paints