1. Let’s revisit our equations from mirrors

2. SIGN + - fConvergingdiverging DiReal On opposite side of lens Virtual On the object side of lens HiUpright and virtualInverted and REAL MLargersmaller DI and Hi CAN BE OPPOSITES!!!

5. F = 15.2 Di = ? Do = 45.7 Hi = ? Ho = 4 cm Now we just plug and chug

6. F = 15.2 Di = 22.8 Do = 45.7 Ho = 4 cm Hi = -1.99 M = -.498 What about magnification? Isit positive or negative? -.498 means smaller image

7. L opposite O – inverted (–)Hi S – smaller (–)M T – real Di + F = 15.2 Do 45.7 Ho = 4 Hi = - 1.99 Di 22.7