\({\mu _2} = 2\), \({\gamma _2} = \frac{7}{5}\) (દ્વિ પરમાણ્વિક વાયુ)

\({\gamma _{{\rm{mixture}}}} = \frac{{\frac{{{\mu _1}{\gamma _1}}}{{{\gamma _1} - 1}} + \frac{{{\mu _2}{\gamma _2}}}{{{\gamma _2} - 1}}}}{{\frac{{{\mu _1}}}{{{\gamma _1} - 1}} + \frac{{{\mu _2}}}{{{\gamma _2} - 1}}}} = \frac{{\frac{{1 \times \frac{5}{3}}}{{\frac{5}{3} - 1}} + \frac{{2 \times \frac{7}{5}}}{{\frac{7}{5} - 1}}}}{{\frac{1}{{\frac{5}{3} - 1}} + \frac{2}{{\frac{7}{5} - 1}}}} = \frac{{5/2 + 7}}{{3/2 + 5}} = \frac{{19}}{{13}}\)