A person can see well close up, but cannot do so in the distance. To correct this, lenses that are _____ having a _____ refractive 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, negative
D) thinner at their center than at the edges, positive

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The Answer of A person can see well close up, but cannot do so in the distance. To correct this, lenses that are _____ having a _____ refractive 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, negative
D) thinner at their center than at the edges, positive

A Person Can See Well Close Up, but Cannot Do