Question

Answer the following questions in brier.
1. In which direction does the transfer of heat normally take place?​

Answer 1

Answer:

Heat transfer always occurs from a region of high temperature to another region of lower temperature, as described in the second law of thermodynamics. Heat convection occurs when bulk flow of a fluid (gas or liquid) carries heat along with the flow of matter in the fluid.

Answer 2

TOPIC :- HEAT TRANSFER

CONCEPT :- Heat transfer takes place whenever there is a temperature difference.

ANSWER :-

• Heat transfer takes place from higher temperature to lower temperature.

• It implies that Hotter body cools down.

ADDITIONAL DETAILS FOR IIT-JEE

Rate of heat transfer is given by

dQ/dt = KA∆T/x

where, K = constant , A = area and x =thickness and ∆T is the temperature difference.

• x/KA can be called heat resistance just like electrical resistance.

• We can solve questions involving heat transfer through two slab by finding equivalent resistance.