Question

What is wava number ? How is it related to wave length

Answer 1

Answer:

A wavenumber is the reciprocal of the wavelength of the wave. This tells you how many wavelengths fit into a unit of distance. It is analogous to frequency, which tells you how often a wave completes a cycle per unit of time (for a traveling wave, this is how many complete wavelengths pass a given point per second).

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Explanation: