Question

you strike

a tuning fork and find that the first harmonic/fundamental resonance is produced when the air column length or height or depth

at 0.166 m. If the speed of sound is 340 m/s, what is the frequency of sound wave produced by the tuning fork in Hz?

Answer 1

The frequency is

$$f=\frac{v}{\lambda}=\frac{v}{4L}=512\text{ Hz}.$$