1. Mirrors Ch. 20

2. Mirrors Mirror – any smooth object that reflects light to form an image

3. Mirrors Focal Point – light rays all pass through the same point Focal Length – distance from center of mirror to focal point

4. Mirrors Plane Mirrors – –Flat surface –Produces upright images –Image appears to be behind the mirror –Light comes from in front of the mirror – does not pass through (opaque) –Virtual image – no light passes through the image –Distance in front = distance behind

5. Mirrors Concave Mirror Curved inward, like the inside of a spoon Converging rays – come together Depending on where the object is, 3 different things happen:

6. Mirrors Object further out than the focal point (F) –Image will be upside down and real –Rays meet at image so you could actually see it –Hold a screen there and see it

7. Mirrors Object placed in between the focal point (F) and mirror –Image will be upright, enlarged and virtual –Example: hand mirrors

8. Mirrors Object placed at focal point –Concentrated light beam –No image because rays don’t converge –Examples: lighthouse, spotlights

9. Mirrors Convex Mirror –Curves outward –Allow large areas to be viewed –Diverging rays – spread out

10. Mirrors Convex Mirrors –Image is virtual, upright, smaller than original object –Examples: security mirrors, rear and side view mirrors (objects are closer than they appear)

11. Mirrors