Question -Which amongst the following graphs represents the V-T graph shown in the figure?
Options:
Answer: Option A : C Let us analyse each process separately. BC is an isothermal process, which implies that the P-Cgraph would be represented by a rectangular hyperbola. (Since PV= constant). This rectangular hyperbola starts at a lower volume V1 and goes to a higher volume as represented in the figure below - Process AB is an isochoric process, which in a P-Vgraph would be a vertical line. Also we notice that the temperature drops in this process, whichimplies that the pressure will also drop (since PV=nRT, when Vis constant P∝T). Therefore point Acan be anywhere on the line represented in blue in the figure below. Process C - A This process is an isobaric process since it represents a curve where V∝T (this is possible only when pressure is a constant, remember Charles' law?). So the process can be represented by a horizontal line in a P-Vgraph. The point where the line joining process A-Band C-Ameet is the point A.
Submit Your Solution hear: