A gas may expand either adiabatically or isothermally. A number of P-V curves are drawn for the two processes over different ranges of pressure and volume . It will be found that : A gas may expand either adiabatically or isothermally. A number of P-V curves are drawn for the two processes over different ranges of pressure and volume . It will be found that : September 10, 2021 Category: Cengage NEET by C.P Singh , Chapter 21 - Laws of Thermodynamics , Part 1 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related