本题目来源于试卷: Physics Unit23: Light and Geometric Optics,类别为 通用国际物理
[单选题]
Two diverging lenses are simv, t 26kcbchq0 a/;j pql,l0hlilarj q2 iiyg:km) h(62tnz except that lens B is rated at 20 diopters, wherea)(i2h :zmgytqi2knj6 s lens A is rated at 10 diopters. The focal length 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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