Wed February 22, 2012 By: Priyanka Mohan

describe and illustrate with a diagram ,how we should arrange 2 converging lenses so that a parallel beam of light emerges as a parallel beam after passing through then 2nd lens one half of the lens is covered with a black paper. will such a lens produce an image of the complete object ?support your answer with ray diagram

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Thu February 23, 2012
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