Which of the following colors of white light has the maximum wavelength?

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Violet

Indigo

Blue

Red

answer is C.

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Detailed Solution

Red light has the maximum wavelength.
White light disperses into its seven constituent colours when it passes through a prism. In the white light spectrum, red light has the longest wavelength and the least frequency (least deviation), whereas violet light has the shortest wavelength and the highest frequency (maximum deviation).

Therefore, moving from violet light to red light wavelength gradually increases. The order of colours according to their increasing wavelengths is given below:
violet < indigo < blue < green < yellow < orange < red (VIBGYOR)
Thus, red would have the maximum wavelength among the given colour of light.

Hence, 'Red' is the correct answer.

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