A) \[3/5\]
B) \[3/7\]
C) \[5/7\]
D) \[5/9\]
Correct Answer: C
Solution :
\[f=\frac{\Delta V}{(\Delta {{Q}_{p}})}=\frac{\Delta {{Q}_{v}}}{{{(\Delta {{Q}_{p}})}_{p}}}=\frac{\mu Cv\Delta T}{\mu Cp\Delta T}=\frac{1}{T}\] \[f=\frac{7}{5}\] \[f=\frac{5}{7}\]
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