Person is having trouble seeing-with power in dioptres

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A person is having trouble seeing. Bifocals must be prescribed for him. His far point is 78.0 cm, and his near point is 57.0 cm. What two lenses (with power in dioptres) must be prescribed to enable him to see clearly from a comfortable reading distance of 25.0 cm to infinity?

Reference no: EM13665293

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