A pressure P -absolute temperature T diagram was obtained when a given mass of gas was heated. Durin

Question

A pressure P -absolute temperature T diagram was obtained when a given mass of gas was heated. During the heating process from the state 1 to state 2 the volume\

Professor PC Thomas Classes · Answer

\ If the volume is constant $\frac{\mathrm{P}}{\mathrm{T}}=$ const. The graph will be a straight line OAC passing through the origin. The expected pressure would be DC. But actual pressure is only DB which is less than DC. So during the process of heating volume should have increased.\