what is wavelength ? plz don't tell definition explain by giving an example of light , what is nm in wavelength .
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Wavelength of light is defined as the distance between the two successive crests or troughs of the light wave.
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Wavelength is the distance from one crest to another, or from one trough to another, of a wave (which may be an electromagnetic wave, a sound wave, or any other wave). Crest is the highest point of the wave whereas the trough is the lowest. Since wavelength is distance/length, it is measured in units of lengths such as metres, centimetres, milimetres, nanometres, etc.
nm is namometer. It is unit of namometer
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