1. Reflections in a Plane Mirror

2. Reflection in a Plane Mirror

3. Activity 4.11 How Light Reflects

4. A B

5. Law of Reflection: When light reflects off a surface, the angle of incidence is always equal to the angle of reflection i = r

6. Looking in a mirror

7. Looking in a mirror

8. Looking in a mirror

9. Object distance vs. Image Distance

10. Ray Diagrams for reflections in a plane mirror

11. Step 1 Identify the top and the bottom of the object (label these “A” and “B”)

12. Step 2 Draw a line from point A that is perpendicular to the mirror

13. Step 3 Draw an incident ray (starting at point A) Draw a “normal” where the incident ray hits the mirror Use a protractor to draw a reflecting ray (Remember that i = r )

14. Step 4 Extend line A to point Ai (equidistant from point A on the other side of the mirror) Connect point Ai to your reflection ray

15. Step 5 Repeat steps 2-4 for Point B

16. Try it!

17. Activity D8 Does a plane mirror reverse Left and Right?