NEET Physics Thermodynamics Questions Solved

Which is the correct statement ?

(1) For an isothermal change PV = constant

(2) In an isothermal process the change in internal energy must be equal to the work done

(3) For an adiabatic change P2P1=V2V1γ, where γ is the ratio of specific heats

(4) In an adiabatic process work done must be equal to the heat entering the system

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