Physics - Heat & Thermo Question with Solution | TestHub

Graph (1) is a vertical line, so P rises at constant T, the volume falls and the density rises. Graph (2) is a horizontal line, so T rises at constant P, the volume rises and the density falls. Graph (3) is a straight line through the origin, so (P)/(T) is constant, the volume is constant and so is the density. All three statements are right. D.