Question

How far does the sound travel in air when a tuning fork of frequency 256 Hz makes 64 vibrations? Velocity of sound in air = 340 m/s².

Answer 1

Velocity of sound in air v = 340 m/s 

Frequency v = 256 Hz 

Distance travelled by the wave in one vibration is equal to its wavelength.

Wavelength λ = \(\frac{v}{V}\)

= \(\frac{340}{256}\)

= 1.328 m

Distance travelled by the wave in 64 vibrations 

= 1.328 × 64 

= 84.992 m = 85 m