A) \[\frac{3}{5}\]
B) \[\frac{3}{7}\]
C) \[\frac{5}{7}\]
D) \[\frac{5}{9}\]
Correct Answer: C
Solution :
\[f=\frac{\Delta V}{(\Delta {{Q}_{p}})}=\frac{{{(\Delta Q)}_{V}}}{{{(\Delta {{Q}_{p}})}_{p}}}=\frac{\mu {{C}_{V}}\Delta T}{\mu {{C}_{p}}\Delta T}=1/4\] For diatomic gas \[\gamma =7/5\] \[f=\frac{5}{7}\]
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