On a cold day when a room temperature is 15oC, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15oC, because

plastics have a higher thermal conductivity than metals

metals have higher thermal capacity than plastics

plastics have a lower density than metals

metals are good conductor of heat

On a cold day when a room temperature is 15oC, the metallic cap of a p

1.	On a cold day when a room temperature is 15oC, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15oC, because
A.	metals have higher thermal capacity than plastics
B.	plastics have a lower density than metals
C.	metals are good conductor of heat
D.	plastics have a higher thermal conductivity than metals
Answer» D. plastics have a higher thermal conductivity than metals