2 lens of power +2.5 D and -1.5Dhad placed in contact with is other find (1) power of combined lens (2)focal length of combination (3) is the above combinatuon is useful to remove short sightedness . explain?
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the answer of power combined of lens will be 1
the focal length is come in positive so it is used in short sidness means myopia
the focal length is come in positive so it is used in short sidness means myopia
bituboss:
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