3. TopicSlidesMinutes 1 Displacement 927 2 Vectors 1339 3 Kinematics 1339 4 Graphs 1030 5 Energy 1030 6 Power 515 7 Springs 412 8 Shadows 39 9 Field of Vision 721 10 Colors 39 11 721 12 Convex mirrors 412 13 Refraction 515 14 Lenses 1030 15 Optical Power 618 Concave Mirrors

4. The law of reflection, therefore, simply states that when a ray of light is reflected from a surface, it is reflected in such a direction that the incident angle equals the reflected angle. Using the law of reflection, we can determine the location of images formed by plane mirrors. x x o o

5. Converges light Diverges light Brings it together Spreads it out Converging mirrorDiverging mirror

6. F Concave mirrors C Back of mirror Principal axis Radius of curvature f Focal length V (vertex) Center of curvature Focal point NOTE The focal length (f) is half the radius of curvature.

7. Click A ray parallel to the principal axis is reflected through the focal point (F). In order to draw images formed by curved mirrors, remember that : F C Principal axis Back of mirror V

8. Click A ray that goes through the focal point (F) is reflected parallel to the principal axis. In order to draw images formed by curved mirrors, remember that : F C Principal axis Back of mirror V

9. Click A ray that strikes the vertex (V) is reflected like a plane mirror. (Angle of incidence = Angle of reflection) In order to draw images formed by curved mirrors, remember that : F C Principal axis Back of mirror V Incident ray Reflected ray Incident ray Reflected ray

10. Click A ray that goes through C (the center of curvature) is reflected back along its own path. In order to draw images formed by curved mirrors, remember that : F C Principal axis Back of mirror V

11. F Concave mirrors C Back of mirror Principal axis Object at infinity (very far away) All rays arrive parallel to the principal axis All rays reflect through F No Image formed

12. F Concave mirrors C Back of mirror Principal axis Object Image d o is positive Object beyond C d i is positive h i is negative M is negative and  1 d o is positive h o d i d o Real

13. F Concave mirrors C Back of mirror Principal axis Object Image d i is positive h i is negative M is negative and  1 d o is positive h o Object beyond C d o is positive h o Real

14. F Concave mirrors C Back of mirror Principal axis Object Image d o is positive h o d i h i is negative M is negative and  1 Object beyond C Real

15. F Concave mirrors C Back of mirror Principal axis Object Image d o is positive h o d i h i is negative M is negative and  1 Object beyond C Real

16. F Concave mirrors C Back of mirror Principal axis Object Image d i is positive h i is negative M is negative and = 1 d o is positive h o Object at center of curvature Real

17. F Concave mirrors C Back of mirror Principal axis Object Image d i is positive h i is negative M is negative and  1 d o is positive h o Object between C and F Real

18. F Concave mirrors C Back of mirror Principal axis Parallel d o is positive h o Object at focal point No Image formed

19. Concave mirrors FC Back of mirror Principal axis Diverging d o is positive h o Object within focal length

20. Concave mirrors FC Back of mirror Principal axis Diverging d i d i is negative h i is positive M is positive and  1 Image d o is positive h o h i Object within focal length Virtual

22. Click The diagram below represents an object placed in front of a concave mirror whose centre of curvature is at point C. Which of the following best represents the image formed by the mirror? A)B) C)D) F Concave Mirrors Slide:

23. A) Real and upright B) Real and inverted C) Virtual and upright D) Virtual and inverted E) No image is formed Click An object is placed at point P in front of a concave mirror. Which of the following are the characteristics of the image. F Image Draw F which is midway between C and mirror. Concave Mirrors Slide:

24. Image Click Concave Mirrors Slide:

25. Click Concave Mirrors Slide:

26. Normal Click Concave Mirrors Slide:

27. A real image formed in front of a curved mirror is always: Click A) Smaller than the object B) Larger than the object C) Upright D) Inverted Image Not always! Concave Mirrors Slide: Look!

28. Image Click Concave Mirrors Slide:

29. … and good luck!