Question

On a cold day when a room temperature is ${15}^{o}C$, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of ${15}^{o}C$, 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 1

The correct option is C metals are good conductor of heat

On a cold day when a room temperature is ${15}^{o}C$, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of ${15}^{o}C$ because metals are good conductor of heat, so they could absorb and release heat in a better way than insulators.