Two Converging Lenses
A compound microscope consists of two converging lenses. Lens 1, called the objective, is a distance 61.0 mm from lens 2, called the eyepiece. The objective is placed in between the object and the eyepiece. The objective has a focal length of 15.0 mm, and the eyepiece has a focal length of 25.5 mm. If the microscope is used to examine an object placed 24.1 mm in
front of the objective, what is the distance of the final image with respect to the eyepiece?
I used the equation 1/i + 1/d = 1/f where i is the image distance, d is the object distance, and f is the focal length. I found the image distance of the objective and used that (plus the distance from the eyepiece to the objective) as the object length for the eyepiece equation. The answer given is 130 mm to the left of the eyepiece but I keep getting numbers much smaller than that. Can someone please explain what I'm doing wrong?
