1. OBJECTIVES 1) Trace light rays as they reflect from a plane mirror.
2) Draw conclusions about the law of reflection.
3) Identify angle of incident and angle of reflection.
4) State the laws of reflection of light.

2. Using ray boxes

3. Reflection
Draw around the mirror

4. Reflection
normal

5. Reflection
normal

6. Reflection
normal

7. Reflection
normal
Angle of incidence

8. Reflection
normal
Angle of incidence

9. Angle of incidence = Angle of reflection
Normal
Incident ray
Reflected ray
Angle of incidence
Angle of reflection
Mirror

10. Law of Reflection angle of incidence = angle of reflection
Can you copy please?
normal
Angle of incidence
Angle of reflection
mirror
angle of incidence = angle of reflection

11. Angle of incidence = angle of reflection

12. THE LAW OF REFLECTION
The angle of incidence is equal to the angle of reflection.
The image in a plane mirror is virtual and is the same size as the object.
Plane mirrors are used in periscopes.
They are used in rear view mirrors.
The image is as far behind the mirror is as the object is in front.
Image is laterally inverted

13. Using mirrors
Two examples:
2) A car headlight
1) A periscope

14. PERISCOPES

17. Shiny smooth surfaces reflect regularly, other surfaces also reflect light but if the surface is rough the light is reflected in all directions. We call this diffuse reflection.

18. Diffuse Reflection