Question: Bifocal glasses are used to correct both nearsightedness and farsightedness
Bifocal glasses are used to correct both nearsightedness and farsightedness at the same time (Fig. 25.23). If the near points in the right and left eyes are 35.0 cm and 45.0 cm, respectively, and the far point is 220 cm for both eyes, what are the powers of the lenses prescribed for the glasses? (Assume that the glasses are worn 3.00 cm from the eyes.)
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