Which of the following colours has a greater speed in glass prism?

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Red

Violet

Green

Orange

answer is A.

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Detailed Solution

Red has a greater speed in a glass prism.
Red light travels the fastest in a glass prism, whereas violet light travels the slowest. The relationship between speed and wavelength is straightforward. When the wavelength rises, so does the speed. As a result, light with the greatest wavelength travels at the greatest speed.

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