Write the Zeroth Law of Thermodynamics.

The zeroth law of thermodynamics states that when two systems are in thermal equilibrium with a third, they are also in thermal equilibrium with each other.

ANSWER : The zeroth law of thermodynamics states that if two systems are separately in thermal equilibrium with a third system, then they are in thermal equilibrium with each other. In simpler terms, it means that if two objects are in thermal equilibrium with a third object, then they are also in thermal equilibrium with each other.

Mathematically, the zeroth law can be expressed as :

Imagine, there are three systems A, B and C. If system A is in thermal equilibrium with system C, and system B is also in thermal equilibrium with system C, then system A is in thermal equilibrium with system B.

In this equation, "thermal equilibrium" refers to a state where there is no net flow of heat between the systems, and they share the same temperature. It implies that if two systems have the same temperature as a third system, they have the same temperature as each other.

Zeroth Law of Thermodynamics (Source : student-baba.com)

The zeroth law is crucial in defining temperature scales and establishing the concept of temperature itself. It allows us to compare and measure temperatures objectively, facilitating the study of heat transfer and the behavior of thermal systems.

In summary, the zeroth law of thermodynamics states that if two systems are in thermal equilibrium with a third system, they are in thermal equilibrium with each other. This law forms the basis for the concept of temperature and enables the measurement and comparison of temperatures.

Also Read : Define Polarisation.

Also Read : What is Driven Simple Harmonic Oscillator.

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