I'm given with these data:
Lens 1 and lens 2 are convex lenses with different focal lengths
Distance of object from lens 1: 50 mm
Distance between lens 1 and lens 2: 100 mm
Distance of final image from lens 1: 300 mm
How to compute for the Distance of first image from lens 1? A ray diagram for this kind of set-up will be appreciated.