Speed (v), wavelength (λ) and the frequency (f) of sound are related as

CONCEPT:

• Wave: It can be defined as the transport of energy without the transport of matter.
• The properties of waves are:
  • Wavelength (λ): The distance between two crests or troughs of a wave is known as wavelength. One wavelength equals the distance between two consecutive crests.
  • Frequency (f): The number of oscillations or the number of waves passes a given point in one sec. Its SI unit is Hertz.
  • Time period (T): The time taken by the wave to complete one cycle.
• The relation between velocity, wavelength, and frequency of a wave is

⇒ v = λ × f 

That is, spee d = wavelength × frequency