what kind of lens is used by short-sighted persons persons?
a. concave
b.convex
c.compound
d.cylindrical
a. concave
b.convex
c.compound
d.cylindrical
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Answer:
A
Explanation:
A concave lens is used to correct short-sightedness (myopia). A short sighted person's focus is focusing before the back of the eyeball. The concave lens pushes the rays of light further apart so that they arrive together in proper focus at the back of the eye.ok
Answer:
A.Concave
Explanation:
A concave lens is used to correct short-sightedness (myopia). A short sighted person's focus is focusing before the back of the eyeball. The concave lens pushes the rays of light further apart so that they arrive together in proper focus at the back of the eye.