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a student was diagnosed with myopia (nearshightedness). He can comfortably read a newspaper when it is...

a student was diagnosed with myopia (nearshightedness). He can comfortably read a newspaper when it is only 10cm away. What kind of corrdecive lenses should be perscribed to the student so he could read the book when 30 cm away from his eyes

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Myopia is nearsightedness in which the image is formed before the retina. To correct this, a diverging lens or concave lens is used so that the image is formed exactly on the retina.

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