An old person is using a spectacle having bifocal lenses. The power of – InterviewSolution

1.	An old person is using a spectacle having bifocal lenses. The power of the two lenses L1 and L2 is +2D and -1D . Then the range within which he can see clearly is
Answer» An old person is using a spectacle having bifocal lenses. The power of the two lenses L1 and L2 is +2D and -1D . Then the range within which he can see clearly is

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