One mole of Helium gas undergoes a reversible cyclic process ABCDA as shown in the figure.Assuming gas to be ideal, answer the following questions : Polytropic process for ideal gas is given as PV^(th)=constant. For polytropic process for an ideal gas.the expression for work obtained is : w=(P_1V_1[(V_2/V_1)^x-1])/((y)) Report your answer as (x+y).

One mole of Helium gas undergoes a reversible cyclic process ABCDA as

1.	One mole of Helium gas undergoes a reversible cyclic process ABCDA as shown in the figure.Assuming gas to be ideal, answer the following questions : Polytropic process for ideal gas is given as PV^(th)=constant. For polytropic process for an ideal gas.the expression for work obtained is : w=(P_1V_1[(V_2/V_1)^x-1])/((y)) Report your answer as (x+y).
Answer» 0 1 2 3 Solution :`W=-intPdV` `=-INT K/V^n dV=-K/(1-n)[V^(-n+1)]_(V_1)^(V_2)=K/(n-1)[V_2^(1-n)-V_1^(1-n)]` `=(P_1V_1^n)/(n-1)[V_2^(1-n)-V_1^(1-n)]=(P_1V_1^(n+1-n))/(n-1)[(V2/V_1)^(1-n)-1]`