State the direction of heat transfer by way of convection.

Give one example of heat transfer by radiation.

Assertion It is hotter over the top of a fire than at the same distance on the sides . Reason In the upwared direction , the heat propagate through convection.

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

What is heat transfer ? Explain conduction of heat.

Explain briefly the process of heat transfer by radiation.

State the three effects of heat on matter.

Assertion : In the human body the heart acts as the pump that circulates blood through differences parts of the body, transferring heat by force convection. Reason : In forced convection , material is force to move by a pump or by some other physics means.

When two bodies and are kept in contact, it is found that heat gets transferred from Q to P. Which physical quantity determines the direction of transfer of heat energy?

Name the three modes of transfer of heat.

Name the method of heat transfer which does not depends on gravity ?