Question

Two chairs (A and B) are in an empty room overnight. Chair A is made of steel while chair B is made of wood. In the night and in the morning, the temperature of the room is 290 K. In
the morning, a person chooses between Chair A and Chair B as the seat by feeling (touching) the chair and choosing one which feels warmer.

Answer 1

Answer:

He chose the wood one..

Answer 2

The Person chooses CHAIR B as it feels warmer because WOOD has LOWER HEAT CONDUCTIVITY than STEEL.

-The heat conductivity of wood is lower than steel.

- So, the wooden chair does not conduct heat and its temperature does not changes.

- On the other hand, the steel chair can conduct heat fairly high in comparison to wood.

- Hence its temperature decreases due to it and it feels colder than the wooden chair.

- So Chair B is chosen in the morning after touching as it is warmer.