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The Tyndall effect in air refers to scattering of light by:
Answer & Solution
Correct answer: A.
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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