A wave pulse on a string moves a distance of 8 m in 0.04 s. What would be the wavelength of the wave on the same string if its frequency is 200 Hz?

Given, distance travelled by the string = 8 m

Time taken by the pulse to move through the string = 0.04 s

Frequency of pulse = 200Hz

$\text{ Velocity of the pulse, }\mathrm{V}=\frac{\text{ distance }}{\text{ time }}=\frac{8}{0.04}=200 \mathrm{m}/\mathrm{s}$

$\text{ Wavelength, }\lambda =\frac{\mathrm{V}}{\mathrm{v}}=\frac{200 \mathrm{m}/\mathrm{s}}{200 \mathrm{Hz}}=1 \mathrm{m}$