1. Reflections in Mirrors

2. Vocabulary
Mirror – A surface that reflects light rays. There are 3 types of mirrors.
Plane Flat, Convex, Concave
Converge- Light rays that come together at a focal point
Diverge- Light rays scatter outward in all directions

3. Vocabulary Object – A source of diverging light rays(arrow)
Image – is the reproduction of the object formed in a mirror or lens. There are two types of images
REAL-an image that appears in front of the mirror when drawing the ray diagram
VIRTUAL –where light rays appear to come together behind the mirror

4. Vocab
Principal Axis-(P) is the straight line that is perpendicular to the surface of the mirror
Focal Point-Where all light rays converge. It is half the distance of the center of curvature
Center (Radius) of Curvature – Is the double the distance of the focal length

5. Vocab ho = height of object hi = height of image f = focal length
Di = distance to image from the mirror
Do = distance to object from the mirror
Inverted image= upside down
Upright image=Right side up

6. Images for Mirrors
Plane Mirror = all images are upright, virtual, same size***Remember the Law of Reflection*****
Convex Mirror = all images are upright, smaller, virtual
Concave Mirror = image depends on location of object****if object is on the focal point, no image is formed!!!

7. Mirror Equations If di is negative, then image is virtual
If di is positive, then image is real
focal length (f) is negative for a convex mirror. All other mirrors are positive.

8. Rules for predicting images
#1 Draw light ray parallel to axis
Reflection will be through the focal point
# 2 Draw light ray through focal point
Reflection will be parallel to the axis
#3 Where the reflective light rays intersect is the image
#4 Identify the type of image