Question

To observe Tyndall effect, the size of the
scatterer must be smaller than the
wavelength of light.
True/False​

Answer 1

Answer:

False

Explanation:

(i) the diameter of the dispersed particles is not much smaller than the wavelength of the light used. (ii) the refractive indices of dispersed phase and dispersion medium differ greatly in magnitude.

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Answer 2

The given statement is false. The size of the scatterer must be in the range of wavelength of light.

Explanation:

• Tyndall effect, also called the Tyndall phenomenon, scattering of a beam of light by a medium containing small suspended particles.
• The size of the scatterer should not be smaller than the wavelength of light used because they won't be able to scatter the light.
• So, therefore, the diameter of the dispersed particles should be equal or not much smaller than the wavelength of the light used.
• The diameter of the dispersed particles should be smaller than the wavelength of light used.
• The refractive indices of the dispersion medium and the dispersed phase must vary in magnitude to a large scale.