The correct increasing order of the wavelengths of the colors is violet, indigo, blue, green, yellow, orange, and red.
It is the difference between the two consecutive crests and troughs of a wave.
In the EM spectrum, the visible light is situated between 350-700 nm of wavelength. The violet is situated first in the visible light and red is last.
Therefore, the correct increasing order of the wavelengths of the colors is violet, indigo, blue, green, yellow, orange, and red.
Learn more about the wavelength:
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