The statement that 39 heat cannot flow by itself from a body at a lower temperature to a body at a h...........

General Science (NDA) Physics

The statement that 'heat cannot flow by itself from a body at a lower temperature to a body at a higher temperature', is known as-

Zeroth law of thermodynamics

First law of thermodynamics

Second law of thermodynamics

Third law of thermodynamics

Explanation:

From Kelvin Plank statement and Claussius's statement we can say that heat can not be flow form lower temperature to higher temperature until and unless we are adding any external source like heat pump, which justifies Second law of Thermodynamics.

The second law of thermodynamics states that the total entropy of an isolated system can never decrease over time, and is constant if and only if all processes are reversible. Isolated systems spontaneously evolve towards thermodynamic equilibrium, the state with maximum entropy.