A plot of volume (V) versus temperature (T) for a gas at constant pressure is a straight line passing through the origin. The plots at different values of pressure are shown in Fig given below. Which of the following orders of pressure is correct for this gas?
1
p1 > p2 > p3 > p4
2
p1 = p2 = p3 = p4
3
p1 < p2 < p3 < p4
4
p1 < p2 = p3 < p4