Figure 12.5 shows the P-V diagram of an ideal gas undergoing a change of state from A to B. Four different parts I, II, III and IV as shown in the figure may lead to the same change of state.
(a) Change in internal energy is same in IV and III cases, but not in I and II
(b) Change in internal energy is same in all the four cases
This is a multiple choice answer as classified in NCERT Exemplar
(b), (c) Change in internal energy for process A to B
dU=nCvdT=nCv (dT)=nCv (TB-TA)
work done from A to B = area under the PV curve which is maximum for path I
<p><span data-teams="true">This is a multiple choice answer as classified in NCERT Exemplar</span></p><p> (b), (c) Change in internal energy for process A to B</p><p>dU=nC<sub>v</sub>dT=nC<sub>v</sub> (dT)=nC<sub>v</sub> (T<sub>B</sub>-T<sub>A</sub>)</p><p>work done from A to B = area under the PV curve which is maximum for path I</p>
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