Question

What is the value of $\gamma$ for monoatomic gas (ideal gas)?

• A. $\frac{7}{5}$
• B. $\frac{4}{3}$
• C. $\frac{5}{2}$
• D. None

Answer 1

Answer: (D)

$\gamma$ = 1.67 for monoatomic gas
$\gamma =\frac{C_P}{C_V}=\frac{5/2R}{3/2R}=\frac{5}{3}=1.67$