Question

Questions +62 mm Lens Does a strong lens (high power) have a long or short focal length? What are the power and focal length of a thin, flat piece of glass with no curvature? Look carefully at the +62 mm and +400 mm lenses. Which lens has the greater curvature? 1. 120 mim Lens 2. To correct hypermetropia, is it necessary to move the image formed by the eye closer to or farther from the eye's lens system? Does this require a convergent or divergent lens? Does this corrective lens add to or subtract from the light-bending power of the eye's lens system? 3. Are the surfaces of the corrective lens that you used on the eye model concave or convex? On real eyeglasses, each lens has one convex surface and one concave surface. To correct hypermetropia, which surface must be more curved? PHYS 233 4/5/2017 6-4

Answer 1

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