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NEET UG PHYSICS MCQ: THERMODYNAMICS
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Assertion: The zeroth law said that, when two systems and are in thermal equilibrium, there must be a physical quantity that has the same value for both.
Reason: The physical quantity, which is same for both the systems, is temperature.
Reason: The physical quantity, which is same for both the systems, is temperature.
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Correct option: A
If both assertion and reason are true and reason is the correct explanation of assertion
The zeroth law of thermodynamics defines thermal equilibrium, and temperature is the physical quantity that is the same for systems in thermal equilibrium. Therefore, both the assertion and reason are true, and the reason is the correct explanation.
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