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CBSE Class 10 Answered

lenses of different nature
Asked by | 31 Jul, 2008, 02:56: PM
answered-by-expert 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 | 07 Aug, 2008, 02:10: PM

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