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Question

The phenomenon of scattering of light by fine particles is called _____ :

A
Snell's law
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B
Dispersion effect
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C
Law of refraction
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D
Tyndall effect
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Solution

The correct option is D Tyndall effect
The earth's atmosphere is a heterogeneous mixture of minute particles like smoke, tiny water droplets, suspended particles of dust, and molecules of air. When a beam of light strikes such fine particles, the path of the beam becomes visible. This phenomenon of scattering of light by such kinds of colloidal particles is called Tyndall effect.

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