A gas expands adiabatically at constant pressure such that its temperature T α $\dfrac{1}{\sqrt{v}}$, the value of $\dfrac{C_P}{C_V}$ of the gas is
1.30
1.50
1.67
2.00
A gas expands adiabatically at constant pressure such that its temperature T α $\dfrac{1}{\sqrt{v}}$, the value of $\dfrac{C_P}{C_V}$ of the gas is