Thermal Propert...

An ideal gas is initially at $$  P_{l}, V_{1} $$ is expanded to $$  P_{2}, V_{2} $$ and then compressed adiabatically to the same volume $$  V_{l} $$ and pressure $$  P_{3} $$.If  W  is the net work done by the gas in complete process which of the

A small quantity, mass m, of water at a temperature $$\theta$$ in ($$^oC$$) is poured on to a large mass M of ice which is at its melting point. If c is the specific heat capacity of water and L the latent heat of fusion of ice, then the mass of ice melted is given by : 

A sample of gas expands from volume  $$V _ { 1 }$$  to  $$V _ { 2 } .$$  The amount of work done by the gas is greatest when the expansion is

All bodies radiate heat at all temperature except at

The intensity of heat radiation by a point source measured by a thermopile placed at a distance d is $$I$$ , If the distance of thermopile is doubled then the intensity of radiation will be -

If $$C_p$$ and $$C_v$$ are molar specific heats of an ideal gas at constant pressure and volume respectively. If $$\gamma$$ is ratio of two specific heats and $$R$$ is universal gas constant then $$C_p$$ is equal to?

A sphere, a cube and a thin circular plate, all of same material and same mass, are initially heated to same high temperature. Choose the correct statement.

r.m.s. speed of ideal gas at $$127^oC$$ is $$200m/s$$, the r.m.s. speed of same ideal gas at temperature $$227^oC$$ is:

Heat current is maximum in which of the following (rods are of identical dimension)

What happens in the process of thermionic emission?