A cyclic process `1rarr2rarr3rarr1` shown in `P-T` diagram is performed with a constant mass of an ideal gas. Show it on a (a) `P-V` diagram (b) `V-T`

Explanation

(a) `1rarr2` is an inclined line passing through origin i.e., it represents isochoric process (V: constant)
`1rarr2` P is increasing
`2rarr3`: Pressure is constant
`PV=nRTimpliesVpropT`
As temperature is decreasing, hence, volume is decreasing.
`3rarr1` Temperature is constant `P-V` diagram will be rectangular hyperbola. In `3rarr1`, pressure is decreasing The `P-V` diagram will be
(b) `1rarr2`: Volume is constant, temperature is increasing `2rarr3`: P is constant , on `V-T` diagram `2rarr3` will straight line through origin. T is decreasing.
`3rarr1`: T is constant, P is decreasint i.e., volume is increasig (since `PV=nRT`)