\( = \frac{{V\left( {{\rho _{{O_2}}} + {\rho _{{H_2}}}} \right)}}{{2\,V}} = \frac{{{\rho _{{O_2}}} + {\rho _{{H_2}}}}}{2}\) (since\({V_{{O_2}}} = {V_{{H_2}}} = V\))
\( = \frac{{{\rho _{{H_2}}} + 16{\rho _{{H_2}}}}}{2} = 8.5{\rho _{{H_2}}}\)
==> \(v \propto \frac{1}{{\sqrt \rho }}\)
==>\(\frac{{{V_{mix}}}}{{{V_{{H_2}}}}} = \sqrt {\frac{{{\rho _{{H_2}}}}}{{{\rho _{mxn}}}}} = \sqrt {\frac{{{\rho _{{H_2}}}}}{{8.5{\rho _{{H_2}}}}}} \approx \sqrt {\frac{2}{17}} \)
(હવામાં ધ્વનિની ઝડપ $340\, {ms}^{-1}$)