Question

Tyndall effect is observed when ______.

विकल्प

• The diameter of dispersed particles is similar to the wavelength of light used.

• The refractive index of dispersed phase is greater than that of the dispersion medium.

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

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

Answer 1

Tyndall effect is observed when the diameter of dispersed particles is similar to the wavelength of light used.

Explanation:

The Tyndall effect occurs when light is scattered by particles whose size is comparable to the wavelength of the light. This scattering makes the light path visible, as observed in colloidal solutions. Particles much smaller or larger than the wavelength do not produce the Tyndall effect clearly.