本题目来源于试卷: Physics Unit23: Light and Geometric Optics，类别为 国际高中通用物理
[单选题]
Two diverging lenses are similar except :aqxv)eb gf*78 pkjthe++tnd,q e51ethat lens B is rated at 20 diopters, whereas lens A is rated at 10 diopters. The focal lengtp t+eqet8 jd,k1e n+5hh of lens B is
A. one-fourth of the focal length of lens A.
B. one-half of the focal length of lens A.
C. twice the focal length of lens A.
D. four times the focal length of lens A.
参考答案: B
本题详细解析:
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