The splitting of different colours of light in a prism is
(A) Reflection of light
(B) Dispersion of light
(C) Diffraction of light
(D) Refraction of light
Correct Answer : Dispersion of light
Question Asked : SSC Combined Graduate Level Prelim Exam 1999
Explanation : The refractive 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 colours to be refracted differently and to leave the prism at different angles, creating an effect similar to a rainbow.
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Tags : Physics