Question

A gas expands adiabatically at constant pressure such that T $\propto$ V–1/2. The value of $\gamma$ (Cp,m/Cv,m) of the gas will be :

• A. 1.30
• B. 1.50
• C. 1.70
• D. 2

Answer 1

Answer: (B)

1.50

Answer 2

T $\propto \frac{1}{\sqrt{V}}$; TV1/2 = constant

For adiabatic process,$TV^{\gamma - 1}$= constant $\therefore$

$\gamma - 1$= $\frac{1}{2}$,$\gamma$ =$\frac{3}{2}$