1. Ray diagrams Same rays as we drew for mirrors
Rays will always go through the mirror (not reflected) but will be somehow bent (refracted)

2. Useful Definitions
Lens – a transparent object that refracts light rays, causing them to converge or diverge to create an image.
**Big difference with mirrors**
Real is on the right side of the lens. Why?
+ side of mirror is ride side
- side of mirror is left side

3. Converging lens #1 2F F C F 2F
Real, Inverted, Reduced Image

4. Converging lens #2 2F F C F 2F
Real, Inverted, True (Same size) Image

5. Converging lens #3 2F F C F
Real, Inverted, Enlarged Image

6. Converging lens #4 F C F
Virtual, Upright, Enlarged Image

7. For converging lenses f is positive p is positive
q is positive for real images and negative for virtual images
M is negative for real images and positive for virtual images
hi is negative for real images and positive for virtual images

8. Diverging lens F C F
Virtual, Upright, Reduced Image

9. For diverging lenses f is negative p is positive q is negative
M is positive and < 1
hi is positive and < ho