The equation of a progressive wave is $y = 8\sin \left[ {\pi \left( {\frac{t}{{10}} - \frac{x}{4}} \right) + \frac{\pi }{3}} \right]$. The wavelength of the wave is .... $m$
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(a) From the given equation $k = \frac{{2\pi }}{\lambda }$= Co-efficient of $x$
$ = \frac{\pi }{4}$ ==> $\lambda = 8\,m$
$ = \frac{\pi }{4}$ ==> $\lambda = 8\,m$
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