Explain the following terms :
Angle of incidence

Explanation

**Step-by-Step Solution:**

1. **Understanding the Setup:**
- Consider a reflecting surface, such as a plane mirror.
- When light rays come from a source and strike this surface, they are referred to as incident rays.

2. **Identifying the Normal:**
- The normal is an imaginary line that is perpendicular (at a right angle) to the surface of the mirror at the point of incidence.
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