In Faraday-Tyndall effect the colloidally suspended particles 

Options

A. trace out the path of strong beam of light
B. undergo coagulation
C. show electrophoresis
D. show brownian movement

Answer

To solve the question regarding the Faraday-Tyndall effect and the behavior of colloidally suspended particles, we can break it down into steps:

### Step-by-Step Solution:

1. **Understanding the Faraday-Tyndall Effect**:
- The Faraday-Tyndall effect refers to the scattering of light by colloidal particles. This phenomenon occurs when a beam of light passes through a colloidal solution.

2. **Behavior of Colloidal Particles**:
- In a colloidal suspension, the particles are small enough to remain dispersed but large enough to scatter light. When a strong beam of light is directed through the colloid, these particles scatter the light in various directions.

3. **Observation of the Effect**:
- The scattering of light by the colloidal particles makes the path of the light beam visible. This is often observed as a visible beam of light in the colloidal solution, which is known as the Tyndall effect.

4. **Conclusion**:
- Therefore, in the context of the question, the colloidally suspended particles scatter the beam of light in different directions, allowing us to see the path of the light.

5. **Final Answer**:
- Based on the understanding of the Faraday-Tyndall effect, the correct answer is that the colloidally suspended particles scatter the light beam.