# A fourth harmonic standing wave is set up in a 3 m long guitar string. If the frequency of the wave is 191 Hz, what is its velocity?

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Jane Share
Mar 21, 2018

If the length of the guitar is $l$,then for $4$ th harmonic $\lambda = \frac{2 l}{4} = \frac{l}{2} = \frac{3}{2} = 1.5 m$

Now,using $v = \nu \lambda$

Given, $\nu = 191 H z$

So,v=191×1.5=286.5 ms^-1

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