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Isobaric Process

When a thermodynamic system undergoes a physical change in such a way that its pressure remains constant, then the change is known as isobaric process.
In this process, V and T changes but P remains constant. Hence, Charles’ law is obeyed in this process.
Equation of state From ideal gas equation, PV = μRT.
If pressure remains constant, V T.
or 55623.png
Indicator diagram In Fig. 12, graph I represents isobaric expansion, and graph II represent isobaric compression.
Slope of indicator diagram, 55617.png
Fig. 12
Work done in isobaric process
[as P = constant]

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