Question

Which of the following observations cannot be explained by Tyndall Effect?

• A. Sunlight entering a smoke filled dark room from a tiny hole.
• B. Sunlight entering from a canopy of dense forest.
• C. Speed of light in vacuum is $3\times {10}^{8}m/s$
• D. Light passed through a milk solution.

Answer 1

Answer: (C)

Speed of light in vacuum is $3\times {10}^{8}m/s$

Tyndall Effect is observed in many natural phenomenon. It involves the scattering of light in a colloidal solution by fine particles. Some common phenomenon include the sunlight entering through forest canopy, sunlight entering a dark room from a small hole and light passed through a milk solution. Speed of light in a medium is defined by the refractive index of the medium. It is maximum for vacuum and is given by the value $3\times {10}^{8}m/s$.