Question:
The ratio of specific heat capacities ($C_p/C_v$) of a diatomic gas is ________.
The ratio of specific heat capacities ($C_p/C_v$) of a diatomic gas is ________.
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Monatomic: 1.67, Diatomic: 1.40, Triatomic: 1.33.
Updated On: Jun 26, 2026
- 1.4
- 1.6
- 1.7
- 1.8
- 1.5
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The Correct Option is A
Solution and Explanation
Step 1: Concept
The ratio of specific heats is $\gamma = 1 + \frac{2}{f}$, where $f$ is the degrees of freedom.
Step 2: Meaning
For a diatomic gas, $f = 5$ (3 translational + 2 rotational).
Step 3: Analysis
$\gamma = 1 + \frac{2}{5} = \frac{7}{5}$.
Step 4: Conclusion
$\frac{7}{5} = 1.4$. Final Answer: (A)
The ratio of specific heats is $\gamma = 1 + \frac{2}{f}$, where $f$ is the degrees of freedom.
Step 2: Meaning
For a diatomic gas, $f = 5$ (3 translational + 2 rotational).
Step 3: Analysis
$\gamma = 1 + \frac{2}{5} = \frac{7}{5}$.
Step 4: Conclusion
$\frac{7}{5} = 1.4$. Final Answer: (A)
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