Thermal Propert...

Two containers of equal volume containing the same gas at pressure $$P_{1}$$ and  $$P_{2}$$ and absolute temperature  $$T_{1}$$ and  $$T_{2}$$ respectively were connected with narrow capillary tube. The gas reaches a common pressure P and a common temperature T. The ratio P/T is equal to :

Which of the following methods of flow of heat is (are) based on gravitational attraction?

In a room containing air, heat can go from one place to another by :

Ventilators are provided at the top of a room:

Sun's heat reaches the earth by the process of:

In the following, which statement is correct :
a) A hot body emits hot radiations only.
b) A cold body absorbs the radiations only.
c) A cold body emits cold radiations only.
d) All the bodies emit and absorb radiations simultaneously.

Newton's law of cooling is applied in laboratory for the determination of the

Radiation is passing through a transparent medium, then :

When the pressure of a gas is changed, then: