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Karnataka Board PUCPUC Science 2nd PUC Class 12

Explain the term Tyndall effect.

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Question

Explain the term Tyndall effect.

Explain
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Solution

When a beam of light is allowed to pass through a colloidal solution, it becomes visible like a column of light. This is known as the Tyndall effect. This phenomenon takes place as particles of colloidal dimensions scatter light in all directions.

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The conditions given below are in the context of observing Tyndall effect in colloidal solutions:

  1. The diameter of the colloidal particles is comparable to the wavelength of light used.
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  3. The diameter of the colloidal particles is much larger than the wavelength of light used.
  4. The refractive indices of the dispersed phase and the dispersion medium are comparable.
  5. The dispersed phase has a very different refractive index from the dispersion medium.

Choose the most appropriate conditions from the options given below:


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