if f1 and f2 are the focal length of two lens,what is the relation for equivalent focal length ?

Asked by priyanka mohan | 17th Dec, 2011, 06:09: PM

Expert Answer:

formula for finding equivalent focal length(F):
1/f1  +1/f2  =1/F

Answered by  | 19th Dec, 2011, 10:45: AM

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