Verified Solution • 2025–26 Session
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QJEEM17Ch0092: JEE Main 2017 Chemistry - Class 12 JEEM17Ch0092 Solution: The Tyndall effect is observed only when following conditions…
The Tyndall effect is observed only when following conditions are satisfied:
(a) The diameter of the dispersed particles is much smaller than the wavelength of the light used.
(b) The diameter of the dispersed particle is not much smaller than the wavelength of the light used.
(c) The refractive indices of the dispersed phase and dispersion medium are almost similar in magnitude.
(d) The refractive indices of the dispersed phase and dispersion medium differ greatly in magnitude.
(a) The diameter of the dispersed particles is much smaller than the wavelength of the light used.
(b) The diameter of the dispersed particle is not much smaller than the wavelength of the light used.
(c) The refractive indices of the dispersed phase and dispersion medium are almost similar in magnitude.
(d) The refractive indices of the dispersed phase and dispersion medium differ greatly in magnitude.
Multiple Choice Options
- A (b) and (d)
- B (a) and (c)
- C (b) and (c)
- D (a) and (d)
Step-by-Step Verified Solution
Tyndall effect is observed only when
(i) The diameter of the dispersed particle is not much smaller than the wavelength of the light used.
(ii) The refractive indices of the dispersed phase and dispersion medium differ greatly in magnitude.
So, (b) and (d) are correct.
(i) The diameter of the dispersed particle is not much smaller than the wavelength of the light used.
(ii) The refractive indices of the dispersed phase and dispersion medium differ greatly in magnitude.
So, (b) and (d) are correct.