A person can see well in the distance,but cannot do so at an arm's-length distance.To correct this,lenses that are ________ having a ________ power could be used.
A)thicker at their center than at the edges,positive
B)thicker at their center than at the edges,negative
C)thinner at their center than at the edges,positive
D)thinner at their center than at the edges,negative

Question

Quizplus · Accepted Answer

Thicker at the center than at the edges lenses are convex lenses, which have a positive power and are used to correct farsightedness (hyperopia), allowing a person to see well at close distances.

A Person Can See Well in the Distance,but Cannot Do