Unformatted text preview: of the combined lens? (Power of Lenses) a. 1/3 diopter b. 20 diopters c. 40 diopters d. 300 diopters 4. A lens is used as a magnifier. Which of the following statements is incorrect? (Simple Magnifier) a. The lens is convex. b. The dioptric power of the lens is positive. c. The magnification is greatest when the eye focuses at the near point. d. The focal length of the lens must be negative. 5. A magnifying lens with a focal length of 10 cm has what maximum magnification? (Assume the near point is 25 cm.) (Angular Magnification) a. 7.1 b. 2.5 c. 3.0 d. 3.5 Answers: 1d 2b 3c 4d 5d...
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 Fall '08
 Avery
 Physics, Presbyopia

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