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    Two thin lenses of focal length F1 and F2 are separated by a distance D between them if the combination satisfies the condition for no chrom

    Saiprasad 2nd Jul, 2019
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    Answer (1)
    Vivek Joshi 10th Jul, 2019


    Dear Saiprasad,

    If two lenses of focal length F1 and F2 are seperated by D distance apart, then the corresponding focal length for the combination of two lenses is given by

    1/F = (1/F1+1/F2)- (d/F1F2)

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