Question

Why the path of light is not visible in a solution?

• A. The path is not visible because scattering of light takes place
• B. The path is not visible because scattering of light does not take place
• C. The path is not visible because light does not have particles
• D. The path is not visible because solution has large particles

Answer 1

The correct option is B

The path is not visible because scattering of light does not take place

Scattering of light by particles of a mixture makes it path visible to our eyes. This phenomenon is called as Tyndall effect.

• Colloids and suspensions are made of particles that are big enough to scatter a beam of light.
• But, particles in solutions are too small to scatter a beam of light. Hence, the path of light is not visible when it passes through them.