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Question
The splitting of white light into its constituent colours is called ___.
The splitting of white light into its constituent colours is called ___.
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Solution
The correct option is C dispersion
The splitting of white light into its component colours when passing through a refractive medium is called 'dispersion'. The cause of this phenomenon is the change in the speed of light with wavelength. i.e., in a refracting medium, lights of different colour travel at different speed. The speed of violet colour (least wavelength among visible light) is the least and of the red colour (greatest wavelength among visible light) is the greatest. For example: When light travels from air into water, it slows down, causing it to continue to travel at a different angle or direction and so they split into the colour spectrum.
The splitting of white light into its component colours when passing through a refractive medium is called 'dispersion'. The cause of this phenomenon is the change in the speed of light with wavelength. i.e., in a refracting medium, lights of different colour travel at different speed. The speed of violet colour (least wavelength among visible light) is the least and of the red colour (greatest wavelength among visible light) is the greatest. For example: When light travels from air into water, it slows down, causing it to continue to travel at a different angle or direction and so they split into the colour spectrum.
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