lenses of different nature

Asked by  | 31st Jul, 2008, 02:56: PM

Expert Answer:

If lenses of same focal length but different nature are put together then equivalent focal length ,

1/feqt=1/f+(-1/f)

or f = infinite

hence rays become parallel after refraction.

Answered by  | 7th Aug, 2008, 02:10: PM

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