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It refracts the light rays (bends the light) and focusses the rays on the part of your eye that makes you see which makes the image larger. The convex lesn is used not concave! Conxes looks like this (). Concake like this )(. But as long as convex bends out word and concave inword you can tell the differcnce. :)

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16y ago

What else can I help you with?