A physics professor requires reading glasses with +2.00 D power toread a book held 40.0 cm away with a relaxed eye. Assume the glasses are 2.00 cm in front of his eyes.
a) What is his uncorrected far point?
b) What refractive power lenses should he use for distance vision?
c) His uncorrected near point is 1.00 m. What should be the refractive powers of the two lenses in his bifocals be to give him clear vision from 25.0 cm to infinity?