Problem: A converging lens and a diverging lens, separated by a distance of 24.5 cm, are used in combination. The converging lens has a focal length of 14.8 cm. The diverging lens is of unknown focal length. An object is placed 17.3 cm in front of the converging lens; the final image is virtual and is formed 12.0 cm before the diverging lens.
A- What is the focal length of the diverging lens?
(in cm)
Rework your solution from the beginning and check each step carefully.