Science (086) — AI-generated practice question

Tyndall Effect: When a beam of light passes through a colloidal solution or a heterogeneous mixture, the path of light becomes visible due to scattering of light by the fine particles suspended in the medium. This phenomenon is called the Tyndall effect.

Example from nature: When sunlight passes through the canopy of a dense forest, tiny water droplets in the mist scatter the light, making the beam of sunlight visible. This is the Tyndall effect.

Source: Chapter 10, Section 10.6.1

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• Mark 1 is for the correct definition — scattering of light by colloidal/fine particles making the beam visible.
• Mark 2 is for a valid natural example. Both "sunlight through forest canopy" and "sunlight through a smoke-filled room" are acceptable. Examiners want the example to name the scattering particles (water droplets/smoke particles).
• Avoid confusing Tyndall effect with refraction or reflection — it is specifically scattering by colloidal/fine particles.