| A | B |
| plane mirror | smooth surface that reflects images in a regular way |
| concave mirror | mirror that is caved inward |
| convex mirror | mirror that is curved outward |
| mirrors that have no sheprical abberation | Perfectly parobolic |
| Real images | CAN be projected on a screen - LIGHT RAYS ACTUALLY CONVERGE |
| Virtual images | CANNOT be projected on a screen - LIGHT RAYS ONLY APPEAR TO CONVERGE |
| Ray diagrams | can be used to find the location and size of images |
| Third ray on mirror goes through the | Center of curvature |
| mirror rules | do + real, di + real, f + concave |
| lens rules | do + real, di + real, f + convex |
| Images for convex lens with object inside the focal length | convex lens image is virtual, upright, larger |
| Images for convex lenses with object between 1F and Images for convex lenses with object between 1F and 2F | convex lens image is smaller, real, Image is smaller, real, inverted |
| Convex lenses with object at 2F | convex lens image is same size, real, inverted |
| Convex lens with object outside 2F | convex lens image is larger, real, inverted |
| IMAGES FOR CONCAVE(diverging) LENSES | concave mirror images are always virtual, upright, and smaller IMAGES |
| IMAGES FOR CONVEX MIRRORS | convex mirror images are always virtual, upright and smaller IMAGES |
| Images for concave mirror with object inside the focal Images for concave mirror with object inside the focal length | concave mirror image is virtual, upright, larger |
| Images for concave mirror with object between 1F and 2F | concave mirror image is smaller, real, inverted |
| Concave mirror with object at 2F | concave mirror image is same size, real, inverted |
| Concave mirror with object outside 2F | concave mirror image is larger, real, inverted |
| convex lenses are used to | obtain a wider view (downfall is objects may appear closer) |
| concave mirrors are used up close to | see things larger and upright |
| concave lens | thicker at edges, thinner in the middle |
| convex lens | thinner at the edges, thicker in the middle |
| Third ray on a lens goes through the | center of the lens at the principal axis |