Discussion :: Physics
- On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because :
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A.
Metals have higher thermal capacity than plastics |
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B.
Plastics have a lower density than metals |
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C.
Metals are good conductors of heat |
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D.
Plastics have a higher thermal conductivity than metals |
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Answer : Option C
Explanation :
On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because metals are good conductors of heat.
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