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Which of the following colour has the least wavelength?

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Red

Orange

Violet

Blue

answer is C.

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Detailed Solution

Violet has the least wavelength.
The wavelength of blue or violet light is around

400 - 440 nm

. Red light has the longest wavelength in the

VIBGYOR

series.

VIBGYOR

is a combination of seven colours of light to form white light. It is known as the spectrum. Given lights in ascending order of their wavelength are as follows-

Violet < Blue < Orange < Red .

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