==> \( \frac{{{n_1}}}{{{n_2}}} = \frac{{{l_2}}}{{{l_1}}}\sqrt {\frac{{{T_1}}}{{{T_2}}}} \)\( = \frac{1}{4}\sqrt {\frac{1}{4}} = \frac{1}{8}\)
==> \({n_2} = 8{n_1} = 8 \times 200 = 1600Hz\)
${y_1} = 0.05\,\cos \,\left( {0.50\,\pi x - 100\,\pi t} \right)$
${y_2} = 0.05\,\cos \,\left( {0.46\,\pi x - 92\,\pi t} \right)$
તો તેનો વેગ $m/s$માં કેટલો મળે?