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Homework Help: General Lens Question: Diverging or Converging

  1. Dec 10, 2012 #1
    1. The problem statement, all variables and given/known data

    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!

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Dec 10, 2012 #2
    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.
  4. Dec 10, 2012 #3

    Doc Al

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    Staff: Mentor

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