Question
Sun February 05, 2012 By: Devesh
 

A thin convex lens of power 2D & a thin concave lens of power-2D will act as what?

Expert Reply
Mon February 06, 2012
you mean to say the combination of these two lenses?
the net power=0 D
so 1/f =0
so f=infinity.
so the rays parallel to the principal axis will appear to meet at infinity.so there woud not be any deviation.
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