AP EAPCET 04-Jul-2022 Shift 2 Paper

A gas is expanded from an initial state to a final state along a path on a P−V diagram. The path consists of
(i) an isothermal expansion of work 50J,
(ii) an adiabatic expansion and
(iii) an isothermal expansion of work 20J. If the internal energy of gas is changed by −30J, then the work done by gas during adiabatic expansion is