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 thye;fzv gsp2 2-s1mf 9-;nakjkbyr/ y3 e surface of a still pond of waii8.tnq 6f /zpter. 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 refract/ift nz6pqi8.ion 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
| 
