Which of the following lenses would you prefer to use while reading small letters found in a dictionary?

Magnification by Spherical Lenses | PadhAiPro

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MCQ (Single)Magnification by Spherical Lenses

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The power of a lens 'X' is – 2·5 D. Name the lens and determine its focal length in cm. For which eye defect of vision will an optician prescribe this type of lens as a corrective lens ?

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