Why do high altitude areas have brighter sunlight and lower temperatures as compared to the plains?

Explanation

**Step-by-Step Solution:**

1. **Understanding Sunlight at High Altitudes:**
- At high altitudes, sunlight is brighter compared to lower altitudes. This brightness is primarily due to the reduced amount of atmosphere that sunlight has to pass through.
- In lower altitude areas, sunlight travels through more layers of the atmosphere, which causes more refraction (bending of light). This increased refraction scatters the sunlight, making it less intense.

2. **Refraction of Sunlight:**
- Refraction occurs when light passes through different mediums (in this case, layers of the atmosphere). The more layers it passes through, the more it bends and scatters.
...