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Q21
(CISF/2020)
Science & Technology › Basic Science (Physics, Chemistry, Biology)
Tyndall effect appears due to which one of the following properties of light ?
Result
Your answer:
—
·
Correct:
D
Explanation
The Tyndall effect is the phenomenon of scattering of light by colloidal particles or particles in a very fine suspension. When a beam of light passes through such a medium, the individual particles scatter the light, making the path of the beam visible to an observer.
- Scattering: This occurs when light rays deviate from their straight path upon striking obstacles like dust, gas molecules, or water droplets.
- Examples: The visible beam of sunlight entering a dusty room, light passing through a dense canopy of a forest (where mist scatters the light), and the blue appearance of light scattered by milk diluted with water.
Other options like reflection (bouncing of light), diffraction (bending around corners), and polarization (filtering light waves to a single plane) do not primarily cause the Tyndall effect.
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