A system goes from A to B via two processes, I and II as shown in figure. If ∆UI and ∆UII are changes in internal energies in the processes I and II repectively, then:
Correct answer: B. ∆UI = ∆UII
- A. ∆UII > ∆UI
- B. ∆UI = ∆UII
- C. ∆UII < ∆UI
- D. Relation between ∆UI and ∆UII cannot be determined
Explanation
As internal energy is a state function therefore change in internal energy does not depends upon the path followed i.e. ∆UI=∆ UII Also, there is no change in internal energies as this is an adiabatic process.
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About Thermodynamics
Thermal equilibrium and heat explain how temperature and energy transfer are related, while molar specific heats describe the heat required by a gas at constant volume or constant pressure. The first law connects heat supplied, work done and change in internal energy, with sign conventions kept distinct from temperature changes.
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