Question

State the second law of thermodynamics given by Kevin and Clausias. Comment on these statements. Show that they are equivalent to each other

Answer 1

clausius statement? it is impossible to transfer heat from a hot body to cold body without doing some work

Answer 2

The second law of thermodynamics as explained by both-

The Kelvin-Planck Statement:

It is not possible to manufacture a device that has no other function other than transferring heat from one body and also works on a cycle.

The Clausius Statement:

It is not possible to create a device that has only the function of transferring heat from a cold body to a hot body and also works on a cycle.

It is noteworthy that both the statements given above of the Second Law of Thermodynamics are equivalent.

The fact that they are equivalent is shown using a self- explanatory diagram given below.