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Lenses question

  1. Jan 15, 2012 #1
    Plot a graph of 1/u against 1/v and find the intercept on the 1/u axis.

    Determine from your graph

    a) the value of u, when v= 27cm
    b) the value of v,when u 27cm

    I'm sorry but I don't really understand how to find 27cm on my graph when there's nothing like that on it.
  2. jcsd
  3. Jan 15, 2012 #2
    Nevermind I'm stupid =.= just do 1/27
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