Secondary rainbow in the atmosphere is

Options

A. the result of polarization and dispersion of light
B. brighter than the primary rainbow
C. due to the phenomenon of double refraction
D. formed due to two reflections in the rain drop

Answer

To solve the question about the secondary rainbow in the atmosphere, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding Rainbows**:
- A rainbow is an optical phenomenon that occurs when sunlight interacts with water droplets in the atmosphere. It involves reflection, refraction, and dispersion of light.

2. **Formation of Primary Rainbow**:
- The primary rainbow is formed when sunlight enters a raindrop, gets refracted (bent) as it passes into the droplet, reflects off the inside surface of the droplet, and then refracts again as it exits the droplet. This process results in the formation of a circular arc of colors.

3. **Understanding Secondary Rainbow**:
- The secondary rainbow is a fainter and wider arc that appears outside the primary rainbow. It is formed by a similar process but involves two internal reflections within the raindrop.

4. **Two Reflections**:
- In the case of the secondary rainbow, light enters the raindrop, refracts, reflects off the inside surface twice, and then refracts again as it exits. This additional reflection causes the colors to be reversed compared to the primary rainbow.

5. **Conclusion**:
- Therefore, the secondary rainbow is formed due to two internal reflections in the raindrop, leading to a distinct arc of colors that appears outside the primary rainbow.

### Final Answer:
The secondary rainbow in the atmosphere is formed due to two reflections in raindrops.

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