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 ar mjf10w t3q+za1kgc vsj.r* p4e similar except that lens B is rated at 20 diopters, dks+gw pk:gy1/ e,f3x ar;b)ik iv2o(whereas lens A is rated at 10 diopters. p(fg/ ko wi;,seg )vkadr2:1xyi3+bk 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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