A polyatomic ideal gas has 24 vibrational modes. What is the value of \gamma ?
 
Option: 1 1.03
Option: 2 10.3
Option: 3 1.37  
Option: 4 1.30

Answers (1)

Since each vibrational mode has 2 degrees of freedom hence total vibrational degrees of freedom =48
\mathrm{f}=3+3+48=54 \\ \Rightarrow \gamma=1+\frac{2}{\mathrm{f}}=\frac{28}{27}=1.03

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