A nearsighted person has a far point that is 4.2 m from his eyes. What focal length lenses must he use in his contact lenses to allow him to focus on very distant mountains?
A) -4.2 m
B) -5.2 m
C) -4.8 m
D) 4.2 m
E) 5.2 m

Question

Quizplus · Accepted Answer

The correct lens for a nearsighted person must have a focal length that is negative and equal in magnitude to the far point distance, to correct the vision to allow focusing on distant objects.

A Nearsighted Person Has a Far Point That Is 4