The document discusses reflection of light off plane mirrors. It explains that the angle of incidence equals the angle of reflection, and provides steps to draw ray diagrams showing the reflection of light off a plane mirror. These include drawing incident and reflected rays, as well as determining the location of the image relative to the object using the law of reflection.

1. Reflections in a Plane Mirror

2. Reflection in a Plane Mirror

3. Activity 4.11How Light Reflects

4. AB

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 Diagramsfor reflections in a plane mirror

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

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

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

14. Step 4Extend 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 5Repeat steps 2-4 for Point B

16. Try it!

17. Activity D8Does a plane mirror reverse Left and Right?