JEE Main 2017 Chemistry question
Not in JEE Main or NEET syllabus
The Tyndall effect is observed only when the following conditions are satisfied: (i) The diameter of the dispersed particles is much smaller than the wavelength of the light used. (ii) The diameter of the dispersed particle is not much smaller than the wavelength of the light used. (iii) The refractive indices of the dispersed phase and dispersion medium are almost similar in magnitude. (iv) The refractive indices of the dispersed phase and dispersion medium differ greatly in magnitude.
Solution
The Tyndall effect is the scattering of light by colloidal particles, which makes the path of a beam visible. Two conditions must hold. **Size:** the particles must be large enough to scatter appreciably — their diameter must be *comparable to or not much smaller than* the wavelength of the light. If the particles
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account