Tyndall effect in colloidal solution is due to

Options

A. presence of electrical charges
B. scattering of light
C. absorption pf light
D. reflection of light

Answer

To solve the question regarding the Tyndall effect in colloidal solutions, we will follow these steps:

### Step-by-Step Solution:

1. **Understanding the Tyndall Effect**: The Tyndall effect is observed when a beam of light passes through a colloidal solution, making the path of the light visible. This phenomenon occurs due to the interaction between light and the particles in the colloid.

2. **Light Interaction with Colloidal Particles**: When light encounters colloidal particles, it does not pass through them completely. Instead, the light is scattered in different directions by these particles. This scattering is what makes the path of the light beam visible when viewed from the side.

3. **Identifying the Cause**: The key aspect of the Tyndall effect is the scattering of light. This scattering occurs because colloidal particles are of a size that is comparable to the wavelength of visible light, allowing them to effectively scatter the light.

4. **Conclusion**: Therefore, the Tyndall effect in colloidal solutions is primarily due to the scattering of light by the colloidal particles.

5. **Selecting the Correct Option**: From the options provided:
- Option 1: Resonance of electrical charges
- Option 2: Scattering of light
- Option 3: Absorption of light
- Option 4: Reflection of light

The correct answer is **Option 2: Scattering of light**.