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Question
Violet, green, red and yellow are the four colours formed on a white screen when a polychromatic light is dispersed. The arrangement of colours in the decreasing order of wavelengths is:
Options
green, red, yellow and violet
red, yellow, green and violet
violet, green, yellow and red
violet, green, red and yellow
MCQ
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Solution
Red, yellow, green and violet
Explanation:
Wavelength decreases in the order red, yellow, green and violet. Violet has the shortest wavelength among these colours.
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