Question

A suspension was left undisturbed for some time and then checked for

scattering of light. It did not scatter light. Justify the observation.​

Answer 1

When the suspension is left undisturbed for the certain period,  the big macrsocopic particles could scatter light.

Explanation:

• These macro particles are just big enough so that they could scatter light and settle down at the bottom as sediment.
• A clear solution remains the same in which particles are not large enough.
• They cannot scatter light to show the following effects - Tyndall effect, Mi scattering or Rayleigh scattering.
• Hence the clear solution remains same as light scattering property by the macroscopic particles is absent.

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