Question

Which of the following exhibit the Tyndall Effect?

A flashlight beam through air in a room.

A laser beam through salt water.

Car headlights on a foggy night.

A laser beam through a soda drink.

Answer 1

The Tyndall Effect occurs when dispersed particles in a colloid scatter light. Examples of the Tyndall Effect include laser beams passing through salt water, car headlights on a foggy night, and laser beams through a soda drink.

Step-by-step explanation:

The Tyndall Effect is the scattering of visible light by colloidal particles. It occurs when dispersed particles in a colloid are larger than the particles in a true solution and deflect light. Based on this information, the following exhibit the Tyndall Effect:

1. A laser beam through salt water. In this case, the dispersed particles in the saltwater act as colloidal particles and scatter the laser beam, making it visible.
2. Car headlights on a foggy night. When the headlights pass through the fog, the fog particles scatter the light, making the beams visible.
3. A laser beam through a soda drink. Similar to saltwater, the particles in the soda act as colloidal particles and scatter the laser beam, making it visible.

Answer 2

Probably all but (a)

The Tyndall Effect is caused by dispersion of the incident light by the individual molecules in the liquid.

Salt water and a foggy night will cause dispersion of the incident light.

A soda drink may also cause this dispersion, but and not sure.