Chemistry, asked by zuhaaazeem91, 8 months ago

why in a darkened cinema dust particles appear to dance in a beam light?

Answers

Answered by arifphysicist

Explanation:

This happens due to the scattering phenomenon of light by dust particles. Light travels in a straight line path. This principle is called as the Rectilinear Propagation of light. But some objects, like here the small dust particles can come in the path of light and scatter it. Then the path of light is deviated from its straight line path and, as a result of this the dust particles become visible.

Answered by nikunjbhatt

Answer:

When beam of light fall on these moving partciles, it's scattered through the colloid according to Tyndall effect (This is scattering of a beam of light by the particles of a colloid). - Therefore, dust particles appear dancing in dark cinema hall

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