Intensity of the scattered light depends upon the difference of which of the following property of the dispersed phase and the dispersion medium ?

Options

A. densities
B. viscosities
C. surface tension
D. refractive indices

Explanation

To answer the question regarding the intensity of scattered light and its dependence on the properties of the dispersed phase and the dispersion medium, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Scattering of Light**:
- Scattering of light occurs when light interacts with particles in a medium. The intensity of the scattered light is influenced by the properties of both the dispersed phase (the particles) and the dispersion medium (the surrounding fluid).

2. **Identifying Relevant Properties**:
- The key properties that can influence scattering include the refractive index, size, shape, and concentration of the dispersed particles, as well as the refractive index of the dispersion medium.

3. **Refractive Index**:
- The refractive index is a measure of how much light is bent, or refracted, when entering a material. The difference in refractive index between the dispersed phase and the dispersion medium is crucial for scattering.

4. **Intensity of Scattered Light**:
- According to Rayleigh scattering, the intensity of scattered light is proportional to the fourth power of the frequency of the light and depends on the difference in the refractive indices of the dispersed phase and the dispersion medium.

5. **Conclusion**:
- Therefore, the intensity of the scattered light primarily depends on the difference in the refractive indices of the dispersed phase and the dispersion medium.

### Final Answer:
The intensity of the scattered light depends upon the difference in the refractive indices of the dispersed phase and the dispersion medium.

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