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

Question

Quizplus · Accepted Answer

The focal length of the lens needed is equal to the negative of the far point distance, which is -110 cm, to correct nearsightedness.

A Man Is Nearsighted and Cannot See Things Clearly Beyond