Question

The third overtone produced by a vibrating string $0.5m$ long is $1200hz$. The speed of propagation of the wave in $m{s}^{-1}$ is

Answer 1

Given wavelength $\lambda =0.5$ m and frequency of the wavelength $f=1200$Hz

We know speed of propagation of the wave $v=\lambda f$

$v=0.5\times 1200=600m/s$