The equation of stationary wave along a stretched string is given by $y = 5\sin \frac{{\pi x}}{3}\cos 40\pi t$, where $x $ and $y$ are in $cm$ and $t$ in second. The separation between two adjacent nodes is..... $cm$
A$1.5$
B$3$
C$6$
D$4$
Medium
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B$3$
b (b) On comparing the given equation with standard equation
Separation between two adjacent nodes = $\frac{\lambda }{2} = 3=\,cm$
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