Home JEE Main - Previous Year Papers JEE MAIN 2020 PAPER-9 Tyndall effect is observed when:
JEE Main - Previous Year Papers JEE MAIN 2020 PAPER-9 Single Correct MCQ
Published on: August 14, 2026

Tyndall effect is observed when:

A
The diameter of dispersed particles is much smaller than the wavelength of light used.
B
The diameter of dispersed particles is much larger than the wavelength of light used.
C
The refractive index of dispersed phase is greater than that of the dispersion medium.
D
The diameter of dispersed particles is similar to the wavelenght of light used.

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The correct answer is:
D

Diameter of dispersed particles should not be much smaller than wavelength of light used. Refer topic surface chemistry

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