Question

Which of the two will scatter light: soap solution or sugar solution? Why?

Answer 1

• Soap solution is a colloidal solution that scatters the light because the size of the particle of the colloidal solution is large enough to cause scattering of light.
• The phenomenon of scattering of light by colloidal solution is known as the Tyndall effect.
• The sugar solution is a true solution and the size of particles in the true solution is very small which is not able to deflect light. Therefore, the sugar solution does not scatter light.

Hence, soap solution scatters the light.