What are the steps for the formation of a primary rainbow ?

Explanation

To understand the formation of a primary rainbow, we can break it down into a series of steps that involve the interaction of sunlight with water droplets in the atmosphere. Here are the steps for the formation of a primary rainbow:

### Step-by-Step Solution:

1. **Refraction and Dispersion of Light**:
- When sunlight enters a water droplet, it first undergoes refraction. This bending of light occurs because light travels at different speeds in air and water.
- As the light enters the droplet, it also undergoes dispersion, which is the separation of light into its constituent colors (red, orange, yellow, green, blue, indigo, violet). This happens because different colors of light bend by different amounts.

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