Physics - Wave on String Question with Solution | TestHub

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$\text{Nodes}=\mathrm{6\; }$
$\lambda =\text{0.1}$
$\therefore 5^{\text{th}}harmonic, 5\frac{\lambda }{2}=\text{L}$
$\text{L}=\text{0.25}$
$\text{At}\frac{\text{L}}{2}$
${\text{y}}_{\text{max}}=\text{0.01 sin in }\left(\text{62.8}\times \frac{\text{0.25}}{2}\right)$
$=\text{0.01}$
$\text{Interfering wave velocity}=\frac{\text{w}}{\text{k}}=\frac{628}{\text{62.8}}=10$
$\therefore \text{fundamental frequency}=\frac{\nu }{2\text{L}}=20$