Physics - Sound Wave Question with Solution | TestHub

$\because$Given,

$y_1=\frac{5}{{\left(3x-4t\right)}^2+2}, y_2=\frac{-5}{{\left(3x+4t-6\right)}^2+2}$

According option$\left(d\right)$, at$x=1$

$y_1=\frac{5}{{\left(3-4t\right)}^2+2}$

$y_2=\frac{-5}{{\left(3+4t-6\right)}^2+2}$

$=\frac{-5}{{\left(3-4t\right)}^2+2}$

Both wave pulse equation are existing in same string therefore resultant equation of wave pulse.

$y=y_1+y_2=0$

Hence, option At$x=1m, y_1$and$y_2$always cancel is correct.