1. Curved Mirrors

2. Things to Learn Concave mirrors and convex mirrors
Construction rules for curved mirrors
Formation of images
Uses of curved mirrors

3. Concave Mirrors Focal Length(FP) = R/2 Shiny Surface
Radius of Curvature R C
Center of Curvature F P
Focus
Pole
Focal Length(FP) = R/2

4. Convex Mirrors Focal Length(FP) = R/2 Shiny Surface R
Center of Curvature P F C
Radius of Curvature
Focus
Pole
Focal Length(FP) = R/2

5. Construction Rules of
Curved Mirrors

6. (I) Concave Mirror 1. F C

7. 2. F C

8. 3. F C

9. (II) Convex Mirror 1. F C

10. 2. F C

11. 3. F C

12. Image Formation By
Curved Mirror

13. The image formed is magnified and erect.
Activities #1
Hold a concave mirror about 10cm away from you.
Observe your image.
The image formed is magnified and erect.

14. The image becomes diminished and inverted.
Activities #2
Now ask your partner to hold the mirror and slowly walk away.
Observe the change of the image.
The image becomes diminished and inverted.

15. The nature of image depends on the position of object.
Conclusion
The nature of image depends on the position of object.

16. (1) Object behind C F C Image: Between C and F
Nature: Inverted, diminished, real.

17. (2) Object at C Try yourself ! C F Image: At C
Nature: Inverted, same size as the object, real.

18. (3) Object between C and F
Try yourself !
Image: Behind C
Nature: Inverted, magnified, real.

19. (4) Object at F
Parallel beam C F
Try yourself !
Image: At infinity

20. (5) Object between F and the mirror
Try yourself !
Image: Behind the mirror
Nature: Erect, magnified, virtual.

21. Convex Mirror F C Image: Behind the mirror
Nature: Erect, diminished, virtual.

22. Uses of Curved Mirrors

23. Concave Mirrors 1. Shaving Mirrors / Make-up mirrors
Image of the face is magnified

24. Concave Mirrors
2. Reflectors

25. Concave Mirrors
3. Reflecting telescope

26. Convex Mirrors 1. Rear-view Driving Mirror
It gives a wider view than plane mirror.

27. Convex Mirrors
2. Surveillance Mirrors

28. THE END