Topic Details (Notes format)

Light – Reflection and Refraction

Subject: General Science

Book: NCERT Science Class 10

Light exhibits the properties of reflection and refraction.
- **Reflection**:
- The bouncing back of light when it strikes a surface.
- Laws of Reflection:
1. The angle of incidence = angle of reflection.
2. The incident ray, reflected ray, and normal lie on the same plane.
- **Refraction**:
- The bending of light when it passes from one medium to another.
- Example: A pencil appears bent in water.
- **Applications**:
- Mirrors in cars (reflection).
- Lenses in glasses and cameras (refraction).

**Possible Exam Questions:**
1. State the laws of reflection and explain their significance.
2. What is refraction? Why does a pencil appear bent in water?
3. How does a convex lens differ from a concave lens?
4. Explain the working of mirrors used in vehicles.
5. Solve numerical problems on the lens formula.