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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?
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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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