A) 7
B) 6
C) 5
D) 4
Correct Answer: C
Solution :
\[\gamma =1+\frac{2}{f}\] For diatomic gas \[\gamma =\frac{{{C}_{P}}}{{{C}_{V}}}=\frac{7/2}{5/2}=\frac{7}{5}\] \[\frac{7}{5}=1+\frac{2}{f}\] \[f=5\]
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