3 Mirrors by 6LpFCJ0M

VIEWS: 7 PAGES: 18

									Mirrors
 Physics
Mrs. Coyle
Plane Mirror




               di=do
Plane Mirror




http://physics.bu.edu/~duffy/py106/Reflection.html
            Type of Image
• Virtual
• Equal in Size
• Erect (Upright)
   Spherical (Curved) Mirrors
• Concave



• Convex
Concave Mirror(Converging)




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




      http://buphy.bu.edu/~duffy/PY106/22a.GIF
  Summary for Concave Mirror
When object is:          Image is:
• Beyond C               • Between C and F

• At C                   • At C

• Between C and F        • Beyond C

• At F                   • No image

• Between F and mirror   • Virtual image
Mirror Equation
    1=1+1
    f do di
 Magnification



M= hi = -di
   ho do
           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
Convex Mirror (Diverging)




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

• Virtual, reduced, upright image
               Simulation
• http://higheredbcs.wiley.com/legacy/colleg
  e/halliday/0471320005/simulations6e/inde
  x.htm?newwindow=true
                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

								
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