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प्रश्न
What is the internal energy of the system, when the amount of heat Q is added to the system and the system does not do any work during the process?
उत्तर
The first law of thermodynamics is one of the most useful equations when dealing with internal energy, and it states that the change in internal energy of a system equals the heat added to the system minus the work done by the system.
∆U = Q − W
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