This isn't exactly a homework problem, per se, but this was a district assessment I already took today. I was confident that I would get a good grade, but it turns out I got a measly 65%. I don't remember the exact wording, but I do remember the general idea of it. 1. The problem statement, all variables and given/known data There are two lenses, both of which are 16cm apart. An object is 1.3cm away from the first lens. First lens f = 1.2cm do = ? di = ? M = ? Second lens f = .42cm do = ? di = ? M = ? Total Magnification Mtot = ? 2. Relevant equations di = dof/do-f M = di/do Mtot = M1*M2 3. The attempt at a solution First lens f = 1.2cm do = 1.3cm (given) di = 15.6 cm M = 12x Second lens f = .42 do = 16cm+1.3cm = 17.3cm di = .43 cm M = .025x Total Magnification Mtot = .3x Looking back at it now, I think I messed up somewhere in the second lens. I've asked friends what they got for Mtot, and the majority of them said a number around the 200s. What am I doing wrong?