Physics - Wave on String Question with Solution | TestHub

A string is clamped at both the ends and it is vibrating in its$4^{\mathrm{t}\mathrm{h}}$harmonic. The equation of the stationary wave is$y=0.3\sin \left(0.157x\right)\mathrm{ }\mathrm{c}\mathrm{o}\mathrm{s}\left(200\mathrm{\pi }t\right)$. The length of the string is
(All quantities are in$\mathrm{S}\mathrm{I}$units.)