General Lens Question: Diverging or Converging

[digipony]

Homework Statement

General question here: If I have a lens that looks like two concave lenses put together (I believe it is called a Meniscus), how do I conceptually tell whether the lens should be converging or diverging? I think I remember reading something saying that it depends upon which lens has the greater Curvature but I can't find where I saw this...
Any help would be greatly appreciated! Thanks!

Homework Equations

The Attempt at a Solution

 

[digipony]

Never mind: figured it out. If the curvature of the first lens is greater, then it is converging. If the curvature of the second lens is greater, it is diverging.

 

[Doc Al]

If the lens is thicker in the middle, it's converging; if thinner, diverging.