Physics Lenses Questions? Due tomorrow?!

1. Describe the properties of the focal point for a diverging lens.
2. What factors other than the curvature of the lens surface determines the location of the focal point for a diverging lens?
3. Describe the properties of the focal point for a converging lens.

Go to these places

http://www.physicsphenomena.com/ReviewApplicationWordProb-Top18.html
http://en.wikipedia.org/wiki/Focal_length
http://en.wikipedia.org/wiki/Lens_(optics)
http://physics.tutorvista.com/light/lens.html

I hope this helped.