如图所示，OB是光从水中斜射入空气中时的一条反射光线，与水面的夹角为60°．下列

发布时间：2017-05-22 10:31 │ 来源：www.tikuol.com

题型：选择题

问题：

如图所示，OB是光从水中斜射入空气中时的一条反射光线，与水面的夹角为60°．下列关于入射角α、折射角r的说法中正确的是（　　）

A．α=60°、r＜60°

B．α=60°、r＞60°

C．α=30°、r＜30°

D．α=30°、r＞30°

考点：光的折射的光路图

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