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]
A diver is 1.2 m beneath the surface of a 7cx vf0ep 4so.still pon6w1 o eicovbw :rch1-+d of water. At what angle must the diver shine a beam of light toward the sur o+crvib-:e1cho16ww face in order for a person on a distant bank to see it? (The index of refraction 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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