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Wavelength of Visible Light

Which coloure...

Question

Which coloured light has largest wavelength in the visible spectrum?

A

Red

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B

Violet

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C

Blue

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D

Green

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Solution

The correct option is A
Red

Red coloured light (620 - 720 nm) has largest wavelength in white light spectrum and the violet light at the other end has the least wavelength (400 - 440 nm). Rest all the constituent colours have intermediate range of wavelength lying between these two upper and lower limits of wavelengths.

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