In: Physics
An object lies 12 cm to the left of a thin double-convex lens of equal radii 4.8 cm and n=1.6. The lens forms an image at I1, on the right of the lens. It is desired that the image should be at I2, 2cm to the right of I1. To obtain this result, a thin lens of focal length +/- 12 cm is placed between the first lens and I1. Deduce what kind of lens is needed, and find the distance of the second lens from the first. Draw a ray diagram.