CBSE Class 10 Answered
A person is suffering from myopia as well as hypermetropia. He needs lenses of power -5.5D and +1.5D for correcting myopia and hypermetropia respective. Find the focal length of the lenses used by him in spectacle to correct myopia and hypermetropia.
Asked by sangeeta | 04 Mar, 2016, 01:11: PM
Expert Answer
The power of a lens is given as reciprocal of focal length in metres.
Answered by Romal Bhansali | 04 Mar, 2016, 06:20: PM
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