==>\(\frac{{{n_1}}}{{{n_2}}} = \sqrt {\left( {\frac{{{T_1}}}{{{T_2}}}} \right)\,{{\left( {\frac{{{r_2}}}{{{r_1}}}} \right)}^2}\left( {\frac{{{\rho _2}}}{{{\rho _1}}}} \right)} = \sqrt {\left( {\frac{1}{2}} \right)\,{{\left( {\frac{2}{1}} \right)}^2}\left( {\frac{1}{2}} \right)} = 1\)
\( \therefore\) \({n_1} = {n_2}\)
$y_1=5 \sin 2 \pi(75 t-0.25 x)$
$y_2=10 \sin 2 \pi(150 t-0.50 x)$
છે. આ બે તરંગોની તીવ્રતાનો ગુણોત્તર $\frac{I_1}{I_2}$ કેટલો છે.