Question

Blue coloured light is not suitable to be used as danger signals. Write the reason.one word answar​

Answer 1

Explanation:

Because red colour light is more scattered and can be seen from far. But blue colour is light and it is less scattered. That's why red colour light is used for danger signals.

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Answer 2

• It is because red is least scattered by fog or smoke.
• Therefore, it can be seen at large distance also.
• Very fine particles scatter mainly blue light while particles of larger size scatter light of longer wavelength that is red colour.
• If the size of the scattering particles is large enough, then the scattered light may even appear white.