The equation of progressive wave is $y = a\sin (200\,t - x)$. where $x$ is in meter and $t$ is in second. The velocity of wave is ..... $m/sec$
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(a) comparing the given equation with $y = a\sin \left( {\omega t - kx} \right)$
$\omega = 200\,,\;\,k = 1$ so $v = \frac{\omega }{k} = 200\,m/s$
$\omega = 200\,,\;\,k = 1$ so $v = \frac{\omega }{k} = 200\,m/s$
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