Question

A) In real eye glasses, each lens has one convex and one concave surface. To correct...

A) In real eye glasses, each lens has one convex and one concave surface. To correct for farsightedness, which surface needs to be more curved?

B). Between the +62mm and the +400mm lenses, which one has more curvature?

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Answer #1

a)you need a concave surface.

b) curvative is inverserly proportional to radius.

so +62 mm lens is more curvative.

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