Q- define Dispersion of light with diagram lengthy answer required
Answers
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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.
In simple words, dispersion is the phenomenon of splitting up of a composite light into its component colours. The light which we see is actually composed of seven different coloured light-rays of different wavelength. (Example: Sunlight). When a composite light passes through a prism, the component colours undergo deviation at both refracting faces. The extent of deviation depends on the wavelength. This results in splitting up of the composite light.
