The ____ of light causes the smoke particles to become visible when a beam of sunlight penetrates through a tiny hole in a smoke-filled room.

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Detailed Solution

The scattering of light causes the smoke particles to become visible when a beam of sunlight penetrates through a tiny hole in a smoke-filled room.
This is an example of the Tyndall effect. When a beam of light strikes colloidal particles, the light is scattered in all directions, illuminating the particles along the path. This phenomenon is known as the Tyndall effect.
For example, light is scattered when light passes in a glass of milk, and When a torch is focused in a foggy environment, the path of the light is visible.
Tyndall effect can also be observed in a canopy-dense forest when a sunray penetrates through the forest.

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