Consider an engine working in a reversible cycle and using an ideal gas with constant heat capacity c, as the working substance. the cycle consists of two proce

Consider an engine working in a reversible cycle and using an ideal gas with constant heat capacity C, as the working substance. The cycle consists of two processes at constant pressure, joined by two adiabatic as shown in fig. Then the efficiency of this engine in terms of P. P is given by (b) n 1P P) (0)=1 P