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  4. On a cold morning, a metal surface will feel colder to touch than a wooden surfaces, because

Q. On a cold morning, a metal surface will feel colder to touch than a wooden surfaces, because

 3832  164 AIIMSAIIMS 1998Thermal Properties of Matter Report Error

Solution:

The body temperature during winter is more than the surrounding temperature of our atmosphere. And so the temperature of the wood or the metal surface is at a lower temperature than the body. Now when we touch the wood or the metal surface, because of the temperature difference, heat flow will take palce from our body to wood or metal surface. As the metal surface has got a high thermal condiuctivity than wood, the heat flow from our body to metal surface is faster and so we feel colder to touch the metal surface than a wooden one.