WAEC Physics 2025 Objective — Question 12
Question 12 of 51 from the West African Examinations Council (WAEC) Physics 2025 Objective paper, with the correct answer and a full explanation.
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If two bodies, A and B are each in thermal equilibrium with another body C, then the three bodies are in thermal equilibrium with each other. This is a statement of
- A. Zeroth law of thermodynamicsCorrect
- B. First law of thermodynamics
- C. Second law of thermodynamics
- D. Third law of thermodynamics
Explanation
This is the definition of the zeroth law of thermodynamics. The first law deals with energy conservation (ΔQ = ΔU + W); the second law deals with entropy and direction of heat flow.
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