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  4. A graph of pressure versus volume for an ideal gas for different processes is as shown. In the graph curve OC represents

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Q. A graph of pressure versus volume for an ideal gas for different processes is as shown. In the graph curve $OC$ representsPhysics Question Image

KCETKCET 2009Thermodynamics

Solution:

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(i) Curve $OA$ represents isobaric process (since pressure is constant) Since, the slope of adiabatic process is more steeper than the isothermal process.
(ii) Curve $O B$ represents isothermal process.
(iii) Curve $O C$ represents adiabatic process.
(iv) Curve $OD$ represents isochoric process (since volume is constant).