Diego is nearsighted and cannot see things beyond 110 cm from his eyes. What is the focal length of the contact lenses that will enable him to comfortably see distant hills clearly?
A) -50 cm
B) +110 cm
C) +50 cm
D) -110 cm
E) -30 cm

Question

Quizplus · Accepted Answer

Nearsightedness is corrected with diverging lenses, which have a negative focal length. The focal length needed is equal to the far point distance, which is -110 cm.

Diego Is Nearsighted and Cannot See Things Beyond 110 Cm