1. The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light
(a) is scattered the most by smoke or fog
(b) is scattered the least by smoke or fog
(c) is absorbed the most by smoke or fog
moves fastest in air

Question

1.	The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light
(a)	is scattered the most by smoke or fog
(b)	is scattered the least by smoke or fog
(c)	is absorbed the most by smoke or fog
moves fastest in air

MyClass24 · Accepted Answer

Answer is (b) is scattered the least by smoke or fog
Explanation:
Wavelength of red color is the largest thus it can easily be seen from a distance. It is the color which is least scattered by the smoke or smog.