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]
A diver is 1.2 m bene:,vt/i fy hqd.2ht qo/ath the surface of a still p422lcuqbkh.xnuo) ga (sa++scv (w*cv zu :z 0ond of water. At what angle must the diver shine a beam of light toward the surface in order for a person on a distant bank to see it? (The index of refv x )sla0z2cau2(u4:* shv owbn kq+(+guzcc.raction for water is 1.33.)
A. $41^{\circ}$
B. $49^{\circ}$
C. $59^{\circ}$
D. $90^{\circ}$
参考答案: B
本题详细解析:
暂无
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