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One cannot see through the fog. Which of the following could be the reason for that?

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Refractive index of the fog is very high

Light suffers total reflection at droplets

Fog absorbs light

Light is scattered by the droplets

answer is D.

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Detailed Solution

One cannot see through the fog. This is because the droplets scatter the light.
Scattering of light is a phenomenon of absorption and reemission of light of a particular wavelength in some other direction when it comes in contact with minute particles, size of which is comparable to the wavelength of that light. Fog contains a lot of water droplets dispersed in the air so when the light passes through fog, the light gets scattered in all the directions and is the reason why we cannot see clearly in the fog.

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