Physics - Wave on String Question with Solution | TestHub

The correct option is (C). Consider the following diagram:Velocity of a wave $v$ in a given medium is fixed, as $v=\lambda \mathrm{f}$, where $\lambda$ is the wavelength and $f$ is the frequency. Therefore, $f\propto \frac{1}{\lambda }$ The ratio of frequencies in case A and case B is given by, $\frac{{\mathrm{f}}_1}{{\mathrm{f}}_2}=\frac{{\lambda }_2}{{\lambda }_1}=\frac{1}{2}$