Two similar kettles containing equal masses of ... - JAMB Physics 1994 Question
Two similar kettles containing equal masses of boiling water are placed on a table. If the surface of one is highly polished and the surface of the other is covered with soot, Which of the following observations is correct
A
The two kettles will cool down at the same rate
B
the polished kettle cools down more quickly by conduction
C
the kettle covered with soot cools down more quickly because it is a good radiator
D
the kettle covered with soot cools down more quickly by the process of heat convection
correct option: c
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