Question

For an ideal gas `(C_(p,m))/(C_(v,m))=gamma`. The molecular mass of the gas is M, its specific heat capacity at constant volume is :
A. `(gammaR)/((gamma-1)M)`
B. `(gamma)/(M(gamma-1))`
C. `(M)/(R(gamma-1))`
D. `(gammaRM)/(gamma-1)`

Answer 1

Correct Answer - B
`(C_(Pm))/(C_(Vm))=gamma,C_(Pm)-C_(Vm)=R`
`C_(Vm)=(R)/(gamma-1) and C_(Pm)=(Rgamma)/(gamma-1)`
`(gamma)/(gamma-1)=C_(Vm)xxM`
`C_(Vm)=(gamma)/(M(gamma-1))`