Using \({n_1}, = \frac{v}{{4{l_1}}}\) and \({n_2} = \frac{v}{{4{l_2}}}\)
==> \(\frac{{{n_1}}}{{{n_2}}} = \frac{{{l_2}}}{{{l_1}}} = \frac{{26}}{{25}}\)…..\((ii)\)
After solving these equation \({n_1} = 260Hz\),\({n_2} = 250\)\(Hz\)
(વાયુનો અચળાંક $R=8.3 \;JK ^{-1} mol ^{- 1}$ લો)