The main reason behind the advanced sunrise and delayed sunset is . . . . . .of light . Choose from the given options

Options

A. Reflection
B. Refraction
C. Deviation
D. Scattering

Answer

**Step-by-Step Solution:**

1. **Understanding the Concept of Sunrise and Sunset:**
- Sunrise occurs when the sun is just below the horizon, and we can start to see it due to the bending of light.
- Sunset occurs when the sun is just above the horizon, and we can still see it for a while after it has actually set.

2. **Identifying the Role of Light:**
- The light from the sun travels in straight lines. However, when it passes through different mediums (like from space to the Earth's atmosphere), it bends due to a phenomenon called refraction.

3. **Explaining Refraction:**
- Refraction is the bending of light rays when they move from a less dense medium (like air) to a denser medium (like the atmosphere). This bending causes us to see the sun earlier during sunrise and later during sunset than we would if there were no atmosphere.

4. **Conclusion:**
- The advanced sunrise and delayed sunset are primarily due to the refraction of light in the Earth's atmosphere. This phenomenon allows us to see the sun before it has actually risen above the horizon and after it has technically set.

5. **Final Answer:**
- The main reason behind the advanced sunrise and delayed sunset is the **refraction** of light.

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