Wavelength and frequency are two important characteristics to explain the nature of a wave. Wavelength is basically the measure of the distance between two successive points referred to as crests or troughs of a wave. It is always measured in the direction of the wave and is represented by the symbol
λ�. Since it is a measure of the length of distance, it is expressed a unit of length, i.e., meters. Mathematically, it is the speed of the wave in a medium divided by the frequency of the wave.
Frequency of a wave is the number of occurrences of events per unit time. Mathematically, it is the reciprocal of the time period. Frequency is represented by the symbol ‘f’ and its unit is Hertz (Hz). In the context of waves, it can be defined as the number of waves that can pass a certain fixed point per unit of time.
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