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  4. Two thermometers X and Y are placed inside an enclosure whose walls are maintained at a steady temperature T When equilibrium is established, X and Y will give the same reading T

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Q. Two thermometers X and Y are placed inside an enclosure whose walls are maintained at a steady temperature T When equilibrium is established, X and Y will give the same reading T

Thermodynamics

Solution:

By Zeroth law of thermodynamics, if two bodies are in thermal equilibrium with a third body, then all of them are at the same temperature. Hence (a) is the correct answer.