Because of the different indices of refraction for the different wavelengths of visible light, the angle of deviation varies with wavelength. ... The emergence of different colors of light from a triangular prism at different angles leads an observer to see the component colors of visible light separated from each other.
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Answer:
Because of the different indices of refraction for the different wavelengths of visible light, the angle of deviation varies with wavelength. ... The emergence of different colors of light from a triangular prism at different angles leads an observer to see the component colors of visible light separated from each other.
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