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What are wavelength, frequency, time period and amplitude of a sound wave?​

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(a) WAVELENGTH – Wavelength can be DEFINED as the distance between two consecutive rarefactions or two consecutive compressions. The SI unit of wavelength is meter (m).

(b) Frequency – Frequency is defined as the number of oscillations per SECOND. The SI unit of frequency is hertz (Hz).

(c) Amplitude – Amplitude can be defined as the maximum height reached by the trough or crest of a SOUND wave.

(d) Time period – The time period is defined as the time REQUIRED to produce one complete cycle of a sound wave.


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