Which of the following statements is/are true regarding Tyndall effect?

All of these

The phenomenon of scattering of light by the colloidal particles gives rise to Tyndall effect.

This phenomenon is seen when a fine beam of sunlight enters a smoke-filled room through a small hole. Thus, scattering of light makes the particles visible.

Tyndall effect can also be observed when sunlight passes through a canopy of a dense forest. Here, tiny water droplets in the mist scatter light.