An ideal gas expands in such a manner that is pressure and volume can be related by equation PV2 = constant. During this process, the gas is :

heated cooled neither heated or cooled first heated and the cooled

cooled

For an isothermal process, PV = constant and for the given process PV2 = constant. Therefore, the gas is cooled because volume expands by a greater exponent than in an isothermal process.