A sound wave of frequency $245 \,Hz$ travels with the speed of $300\, ms ^{-1}$ along the positive $x$-axis. Each point of the wave moves to and fro through a total distance of $6 \,cm$. What will be the mathematical expression of this travelling wave ?
JEE MAIN 2021, Diffcult
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$\omega=2 \pi f$
$=1.5 \times 10^{3}$
$A=\frac{6}{2}=3 \,cm =0.03\, m$
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