Dispersion of white light by a glass prism occurs because?

A. white light consists of a mixture of seven different colour
B. the refractive index of glass is different from each constituent colour of white light
C. the speed of each colour of light in the glass is proportional to the refractive index of glass for each colour
D. the speed of each colour of light in the glass is proportional to the angle of refraction in the prism

Correct Answer: Option D

D. the speed of each colour of light in the glass is proportional to the angle of refraction in the prism

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