What is heat transfer ? Explain conduction of heat.

What is heat period?

Draw a labelled diagram of a thermos flask. Explain how the transfer of heat by conduction, convection and radiation is reduced to a minimum in it.

State the direction of heat transfer by way of convection.

What is a heat pump ?

Mention the two processes responsible for the conduction of heat.

Explain how heat transfer is reduced in a thermos flask.

Explain the heating of an iron rod by conduction on the basis of kinetic model.

How is conduction of heat different from convection of heat?

What is the sign convention for heat ?

For one mole of a diatomic gas, the ratio of heat transfer at constant pressure to work done by the gas is