How light is dispersed in prism?
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These colors are often observed as light passes through a triangular prism. Upon passage through the prism, the white light is separated into its component colors - red, orange, yellow, green, blue and violet. The separation of visible light into its different colors is known as dispersion.
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The refracted index of many materials (such as glass) varies with the wavelength or colour of the light used, a phenomenon known as dispersion. This causes light of different colour to be refracted differently and to leave the prism at different angles, creating an effect similar to a rainbow. This is how light is dispersed in a prism.
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