1. The problem statement, all variables and given/known data An object that is 6.00 cm tall is placed 40.0 cm in front of a diverging lens. The magnitude of the focal length of the lens is 20.0 cm. Find the image position and size. Is the image real or virtual? Upright or inverted? 2. Relevant equations / 3. The attempt at a solution I am confused on "the magnitude of the focal length of the lens is 20.0cm" part. Does that mean the principle and the secondary focal lengths are 20.0cm each, or is the entire focal length (primary and secondary) 20.0cm?