An ideal gas undergoes four different processes from the same initial state as shown in the figure below. Those processes are adiabatic, isothermal, isobaric and isochoric. The curve which represents the adiabatic process among 1 ,   2 , 3 and 4 is:

Step-by-step solution

For adiabatic process, P ∝ 1 V γ For isothermal process, P ∝ 1 V For isobaric process, P = constant For isochoric process, V = constant ∴ Graphs for different processes Adiabatic ⇒ 2 Isothermal ⇒ 3 Isobaric ⇒ 1 ∴ The graph for adiabatic process is 2 .