I) Diameter of the dispersed particles is not much smaller than the wavelength of light usedII) Diameter of the dispersed particles is much smaller than the wavelength of light usedIII) Refractive indices of the dispersed phase and the dispersion medium must not differ much in magnitudeIV)Refractive indices of the dispersed phase and the dispersion differ greatly in their magnitudeCorrect conditions to observe tyndall effect are