Physics - Unit & Dimension Question with Solution | TestHub

A string of mass per unit length$\text{0.2} \mathrm{kg} {\mathrm{m}}^{-1}$and length$\text{0.6} \mathrm{m}$is fixed at both ends such that it has a tension of$80 \mathrm{N}$. If the string is vibrating in its second overtone mode, then the frequency of the string is