Tyndall effect refers to:
ARefraction at a prism face
BReflection of light off a smooth surface (option)
CScattering of light by colloidal particles in a medium
DDiffraction at a slit
Answer & Solution
Correct answer: C. Scattering of light by colloidal particles in a medium
1. When a beam of light passes through a colloidal solution, particles scatter the light.
2. The path of the beam becomes visible from the side.
3. This Tyndall effect is responsible for visible sun-rays in dusty rooms.
_Source: NCERT Class 10 Science, Ch 10 "The Human Eye and the Colourful World", §10.6_
Related questions
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