Question

A tuning fork makes `256` vibrations per second in air. When the speed of sound is `330 m//s`, the wavelength of the note emitted is :
A. `1.29` m
B. `2.1` m
C. `0.5` m
D. `0.9` m

Answer 1

Correct Answer - a
Wave motion is a disturbance travelling through a
medium. Wave velocity `v = nlambda`
This relation holds for transverse as well as longitudinal
waves.
Here, `v(s) = 330ms^(-1), n = 256 `
So `lambda = v_(s)/n=330/256=1.29 m`