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Physics - Section 1 :: Discussion
| 46. | 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 | |
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