Which law of thermodynamics is the basis of temperature measurement ?

Which law of thermodynamics is the basis of temperature measurement ?

a. Zeroth law of thermodynamics
b. First law of thermodynamics
c. Second law of thermodynamics
d. none of the above

Correct Answer : a. Zeroth law of thermodynamics

Explanation :

When a body A is in thermal equilibrium with a body B, And also the same body A is in thermal equilibrium with a body C, then body B and body C are also in thermal equilibrium with each other. This is called as Zeroth Law of Thermodynamics. It is the basis of temperature measurement.