Draw a ray diagram showing dispersion through a prism when a beam of White light is incident on one of its refracting surface.
(b) Why does the sun paper reddish early in the morning ?
(c) what is a Spectrum ?
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Dispersion of light is the phenomenon of splitting of white light into its constituent colors. Dispersion happens when white light passes through a glass prism. The different colors of light waves have different speeds in any medium like glass. They have different bending amounts after refraction. Hence, they show up separately beside each other.
These colors are Violet, indigo, blue, green, yellow, orange, and red. The rainbow also is formed due to dispersion of light waves at tiny water droplet interface with atmospheric air. Please see the diagram for the related geometry.
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