The equation $y = 0.15\sin 5x\cos 300t$, describes a stationary wave. The wavelength of the stationary wave is .... $m$
A$0$
B$1.26$
C$2.51$
D$0.63$
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B$1.26$
b (b) On comparing the given equation with standard equation
$\frac{{2\pi }}{\lambda } = 5$
$\lambda = \frac{{6.28}}{5} = 1.256\,m$
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