Question

For a gas if ratio of specific heats at constant pressure and volume is g, then value of degrees of freedom is –

• A. $\frac{3\gamma - 1}{2\gamma - 1}$
• B. $\frac{2}{\gamma - 1}$
• C. $\frac{9}{2}(\gamma - 1)$
• D. $\frac{25}{2}(\gamma - 1)$

Answer 1

Answer: (B)

$\frac{2}{\gamma - 1}$

Answer 2

g = 1+ $\frac{2}{f}$Ž g – 1 = $\frac{2}{f}$Ž $\frac{f}{2}$= $\frac{1}{\gamma - 1}$or f = $\frac{2}{\gamma - 1}$