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The Tyndall effect in air refers to scattering of light by:
ASuspended dust and water droplets
BPlant chlorophyll
CSoil minerals on the ground
DPolythene bags
Answer & Solution
Correct answer: A. Suspended dust and water droplets
1. When light traverses air containing suspended particles, particles scatter the beam.
2. The light path becomes visible, especially in dusty/foggy environments.
3. This is the Tyndall effect.
_Source: NCERT Class 10 Science, Ch 13 "Our Environment", §13.1_
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