Which of these is constant in isothermal process?
Correct answer: D. Internal energy
- A. Total heat
- B. Work done
- C. Entropy
- D. Internal energy
Explanation
Correct Option:DThis option is correct because an isothermal process is the process in which temperature remains constant. It means that the internal energy is constant and doesn't change with time As an ideal system by definition has no interaction between particles, no intermolecular force, so pressure change at constant temperature doesn't change internal energy
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About First Law of Thermodynamics
The first law relates heat supplied, work done and the change in internal energy through energy conservation. Problems use sign conventions and apply the law to isothermal, adiabatic, isobaric and isochoric processes. Internal energy is a state function, while heat and work depend on the path followed.
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