Question

State the zeroth law of thermodynamics.

Answer 1

The zeroth law of thermodynamics can be summarized as follows:

(a) Two bodies at different temperature in thermal contact with each other tend to move towards the same temperature.

(b) Two bodies which are separately in thermal equilibrium with a third body, are in thermal equilibrium with each other.

For example hot water when kept in open becomes cold after sometime and attains the temperature of surroundings