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4
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The angle a ray of light makes with a line perpendicular to a surface it stikes.
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5
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An eye condition in which objects at any distance appear blurry because of the distorted shape of the cornea.
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6
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A mirror that is curved outward.
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7
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An eye condition that causes nearby objects to be blurry.
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8
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A lens that is curved inward at the center and is thickest at the outside edges.
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9
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A copy of an object formed at the point from which light appears to be coming.
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11
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A mirror that is curved inward.
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12
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The point at which rays parallel to the axis of a mirror or lens meet or appear to meet.
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13
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the ratio of the speed of light in a vacuum to the speed of light in a medium.
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14
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An eye condition in which distant objects are blurry.
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