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Images in lenses converging lenses

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hasanahatesscience's version from 2015-12-17 03:10

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Question Answer
a ray parallel to principal axis is refracted through the principal focus (F)
ray through the secondary principal focus (F1)is reflected parallel to principal axis
ray through optical centre lens actsas thin rectangular prism.
when the object is BEYOND 2F it isSMALL, inverted BETWEEN F and 2F, real
when objected is AT 2FSAME SIZE, inverted, AT 2F, real
when objected is BETWEEN F1 and 2FLARGER inverted BEYOND 2F, real
memorize

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