Question

One cannot see through fog because :

• A. fog absorbs the light.
• B. light suffers total reflection at droplets.
• C. refractive index of fog is infinity.
• D. light is scattered by droplets.

Answer 1

The correct option is D light is scattered by droplets.

Fog is a visible aerosol consisting of tiny water droplets or ice crystals that remain near the surface of the earth.
When light travels through fog, it interacts with the water droplets of the fog and is scattered by them. The scattering of light by fog droplets is not uniform in all directions. The light from various objects get scattered by water droplets, so the eye cannot distinguish the objects, and thus one cannot see through fog.