Which one of the following processes explains the splitting of a beam of white light into its constituent colours?
A
Dispersion
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B
Reflection
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C
Diffraction
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D
Polarization
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Solution
The correct option is A Dispersion The phenomenon of splitting of a beam of white light into its seven constituent colours when passed through a transparent medium is called dispersion of light. Newton discovered that light is made up of seven different colours. The phenomena was discoverd in 1666 by him.