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+1 vote
37.6k views
in Physics by (52.3k points)

Two thin lenses of power +5D and -3D are in contact. What is the focal length of the combination

1 Answer

+3 votes
by (53.2k points)
edited by
 
Best answer

\(= \frac{1}{2}m=0.5m\)

∴ focal length of the combination is 50 cm.

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