Red light is used for danger signal as

wavelength is very small

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scattering is directly proportional to the wavelength.

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it scatters the least

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it scatters the most

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Solution

The correct option is C
it scatters the least

Red light has the longest wavelength among the visible lights, hence it scatters the least. Because of this, it can be seen from very large distances and also in the foggy weather. That is why it is used as a danger signal.

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1.8

Red color is used in danger signal because it scatters to a wider angle.

Which coloured light scatters the most because of its small wavelength?

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