A particular eye has a focal length of 2.0 cm instead of the 2.2 cm that would put a sharply focused image on the retina. Is this eye nearsighted or farsighted?
Choose one answer.
a. Farsighted
b. Nearsighted
What type of corrective lens is needed for the eye in the previous question?
Choose one answer.
a. Not enough information to tell.
b. A lens with a positive focal length.
c. A lens with a negative focal length.