An experiment is carried on a fixed amount of gas at different temperatures and at high pressure such that it deviates from the ideal gas behaviour. The variation of \(\frac{PV}{RT}\) with P is shown in the diagram. The correct variation will correspond to : 

Curve B

At lower pressure, we can assume that given gas behaves as ideal gas so : \(\frac{PV}{RT}\) = constant. But, when pressure increases, the decrease in volume will not take place in same proportion. 

So, \(\frac{PV}{RT}\) will increase.