Q7 of 234 Page 297

What is tyndall effect? Explain with an example.

Tyndall effect (scattering of light) is the scattering of light by particles in its path.

Example. When through a window, sunlight enters a dusty room then its path becomes visible to us due to the scattering of the light by the dust particles present in the air.


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5

Which effect is illustrated by the observation that when a beam of sunlight enters a dusty room, then its path becomes visible to us.

 6

State two effects produced by the scattering of light by the atmosphere.

 8

What happens when a beam of sunlight enters a dusty room through a window ? Explain your answer.

 9

Why does the sky appear blue on a clear day ?