What is the specific heat ratio, when γ = Cp/Cv and the degrees of freedom are 3 and 5? - IQ786

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What is the specific heat ratio, when γ = Cp/Cv and the degrees of freedom are 3 and 5?

What is the specific heat ratio, when γ = Cp/Cv and the degrees of freedom are 3 and 5?

21/25

25/21

3/5

5/3

Explanation

Let’s assume two cases:

If $f = 3$ (monatomic gas), then:
$γ = 3 + 2 = 5/3$
If $f = 5$ (diatomic gas), then:
$γ = 5 + 2 = 7/5$

Since the question asks for γ when degrees of freedom are 3 and 5, and γ = Cp/Cv, then:

For f = 3 → γ = 5/3