Index.of Photobucket Help On Ray Diagrams For Lenses?

Help on ray diagrams for lenses? - index.of photobucket

I am in a physical problem, I would in practice not found .. Please click here http://i3.photobucket.com/albums/y92/musicis4fools2/lensdiagrams.jpg I Do not Know ray diagram is correct. the left side seems to be the right choice, because it seems converging lens (although it has only 1 side is convex), but not the refractive index of air and water did nothing to them? thank you soo much!