Explain with diagrams velocity, frequency and wavelength of waves. Also establish a relation between them. Enable Ginger Cannot connect to Ginger Check your internet connection or reload the browser Disable in this text field Rephrase Rephrase current sentence Edit in Ginger ×

The distance between two consecutive compressions (or crests) or two consecutive rarefactions (or troughs) is called the wavelength. Its SI unit is metre. It is denoted by ' λ ' (Lambda). When sound travels through a medium, the density of the medium changes between the maximum and minimum values. One vibration is completed when the density moves from the maximum to the minimum value and then reaches back to the maximum value. The total number of such vibrations in a unit of time is called the frequency of the sound wave. If we count the number of compressions and rarefactions passing through the waves in a unit of time then we can find out the frequency of the wave. It is generally denoted by the Greek letter ' ν ' . Its SI unit is hertz ( Hz ) . The sharpness (pitch) depends upon the frequency. ν = 1 T . The distance covered by one compression and one rarefaction in a unit of time is called the speed of sound waves. We know that the speed = Distance / Time The distance travelled by a wave to complete one vibration is equal to its wavelength and time is equal to the time interval. Hence, v = λ T As ν = 1 T So, the speed of the sound wave v = ν × λ That means speed or velocity of a sound wave = frequency × wavelength.