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 beam of light, trave;dy d.jx2 t;nvlingvil8b gg:4 i vloy7;:k in air, strikes a plate of transparent material at an an:lg8:7i v;b4g kyil ovgle of incidence of $56.0^{\circ}$. It is observed that the reflected and refracted beams form an angle of $90.0^{\circ}$. What is the index of refraction of this material?
A. 1.40
B. 1.43
C. 1.44
D. 1.48
参考答案: D
本题详细解析:
暂无
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