The angle between the incident ray and normal ray is called angle of_____.

Options

A. reflection
B. incidence
C. transmission
D. propagation

Answer

**Step-by-Step Solution:**

1. **Understanding the Terms**: The question asks for the angle between the incident ray and the normal ray. We need to define what the incident ray and the normal ray are.

2. **Identifying the Rays**: The incident ray is the ray of light that strikes a surface. The normal ray is an imaginary line that is perpendicular to the surface at the point of incidence.

3. **Defining the Angle**: The angle formed between the incident ray and the normal ray is what we need to identify.

4. **Naming the Angle**: This angle is specifically referred to as the "angle of incidence."

5. **Conclusion**: Therefore, the angle between the incident ray and the normal ray is called the angle of incidence.

**Final Answer**: The angle between the incident ray and normal ray is called the angle of **incidence**.

---