Answer :
Wavelength is the distance between two consecutive compressions or two consecutive rarefaction of a wave sound. Wave length is represented by Greek letter λ (lambda). The SI unit of wavelength is metre (m).
Time period is the time taken to travel the distance between any two consecutive compression or rarefaction from a fixed point. The time period of sound wave is represented by letter ‘T’. The SI unit of time period is second (s).
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