1. The problem statement, all variables and given/known data Three converging lenses of focal length 2.5 cm are arranged with a spacing of 2.2 cm between them, and are used to image an insect 2.3 cm away. Where is the image? 2. Relevant equations 1/do + 1/di = 1/f 3. The attempt at a solution I used the above equation to find the location formed by the first lens. Then I used that information to calculate the position of the image formed by the second lens. Finally, I used that information to calculate the position of the image formed by the third lens. My answer is 0.66 cm to the right of the third lens. I assumed the insect was initially to the right of the system of lenses. Correct answer is 0.43 cm. What did I do wrong?