Asked by pritam | 21st Feb, 2011, 12:01: AM

Expert Answer:

Dear student
A combination of concave and convex lens kept in contact, both of same focal length (or power) will act as a glass slab. Thus, this combination will only laterally shift the beam of light falling on it.
Hope this helps.

Answered by  | 21st Feb, 2011, 11:18: AM

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