very good to read and explain and use during classes

1. Mirrors
Physics
Mr. Berman

2. Plane Mirror
di=do

3. Plane Mirror
http://physics.bu.edu/~duffy/py106/Reflection.html

4. Type of Image
• Virtual
• Equal in Size
• Erect (Upright)

5. Spherical (Curved) Mirrors
• Concave
• Convex

6. Concave Mirror(Converging)
http://www.shokabo.co.jp/sp_e/optical/labo/
lens/lens.htm

7. Concave
Mirror

8. http://buphy.bu.edu/~duffy/PY106/22a.GIF
Converging Mirror

9. Summary for Concave Mirror
When object is:
• Beyond C
• At C
• Between C and F
• At F
• Between F and mirror
Image is:
• Between C and F
• At C
• Beyond C
• No image
• Virtual image

10. Mirror Equation
1 = 1 + 1
f do di

11. Magnification
M= hi = -di
ho do

12. Sign Convention
do + object is in front of the mirror
di + real image, in front of the mirror
di - virtual image, behind the mirror
hi + erect image
hi - inverted image
f + converging (concave) mirrors
f - diverging (convex) mirrors

13. Convex Mirror (Diverging)
http://www.shokabo.co.jp/sp_e/optical/labo/lens/lens.htm

14. Convex Mirror (Diverging)

16. Summary for Convex Mirror
Always:
• Virtual, reduced, upright image

17. Simulation
• http://higheredbcs.wiley.com/legacy/colleg
e/halliday/0471320005/simulations6e/inde
x.htm?newwindow=true

18. Problem
• Find the image distance, height and type
for a 5cm object placed 60cm from a
concave mirror of focal length of 18cm.
• Answer: di=25.7cm, hi=-2.14cm,
Real, Inverted, Reduced