Question

The zeroth law of thermodynamics leads to the concept of

• A. internal energy
• B. heat content
• C. pressure
• D. temperature

Answer 1

The correct option is D

temperature

1. By the zeroth law of thermodynamics, when bodies ‘B’ and ‘C’ are in thermal equilibrium with a body ‘A’, then they are in thermal equilibrium with each other.
2. The zeroth law directly gives implication to temperature measurement.
3. Temperature determines the direction of flow of heat when two bodies are in contact.
4. Hence, two bodies are said to be in thermal equilibrium when they have the same temperature.
5. So, the zeroth law of thermodynamics leads to the concept of temperature.

Hence, option (D) is the correct answer.