State any two differences between primary rainbow and secondary rainbow.

Explanation

To answer the question regarding the differences between primary rainbow and secondary rainbow, we can outline the differences as follows:

### Step-by-Step Solution:

1. **Formation Process**:
- **Primary Rainbow**: A primary rainbow is formed by light rays that undergo one total internal reflection and two refractions as they pass through water droplets in the atmosphere.
- **Secondary Rainbow**: In contrast, a secondary rainbow is formed by light rays that undergo two total internal reflections and two refractions before they emerge from the water droplets.

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