A sound wave of frequency 400 Hz propagates in air. The speed of sound in air is 340 m/s. What is the wavelength of the wave?

Step-by-step solution

1. Use the relation $\lambda =\frac{v}{f}$ for a wave.
2. Substitute $v=340m/s$ and $f=400\mathrm{Hz}$ into the equation.
3. Calculate $\lambda =\frac{340}{400}=0.85\mathrm{m}$.

Concept tested: Wave wavelength calculation

Published 13 October 2026 · How this solution was prepared and checked