# Mirrors Physics Mrs Coyle Plane Mirror dido Plane

• Slides: 18

Mirrors Physics Mrs. Coyle

Plane Mirror di=do

Plane Mirror http: //physics. bu. edu/~duffy/py 106/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/PY 106/22 a. GIF

Summary for Concave Mirror When object is: • Beyond C Image is: • Between C and F • 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. htm

Convex Mirror (Diverging)

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

Simulation • http: //higheredbcs. wiley. com/legacy/colleg e/halliday/0471320005/simulations 6 e/inde x. htm? newwindow=true

Problem • Find the image distance, height and type for a 5 cm object placed 60 cm from a concave mirror of focal length of 18 cm. • Answer: di=25. 7 cm, hi=-2. 14 cm, Real, Inverted, Reduced