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Incorrect statement for Tyndall effect is :

Option: 1

The refractive indices of the dispersed phase and the dispersion medium differ greatly in magnitude.


Option: 2

The diameter of the dispersed particles is much smaller than the wavelength of the light used.


Option: 3

During projection of movies in the cinemas hall, Tyndall effect is noticed.


Option: 4

It is used to distinguish a true solution from a colloidal solution.


Answers (1)

best_answer

As we have learnt,

For Tyndall effect, the refractive indices of the dispersed phase and the dispersion medium should differ greatly in magnitude and the diameter of the dispersed phase and the wavelength of light used showed be similar.

Thus, statement given in Option (2) is incorrect.

Hence, the answer is Option (2)

Posted by

vishal kumar

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