Different colors of light correspond to different wavelengths.Wavelengths are often quoted in nanometers (nm). The wavelengths of the visible part of the spectrum are shown in the diagram below.
According to the diagram, blue-green light would most likely have a wavelength of

470 nm.


The wavelength of blue-green should be between the wavelength of blue light and green light. The wavelength of blue light is about 450 nm and the wavelength of green light is at about 500 nm.Midway between these wavelengths is 470 nm.

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