光线在A、B、C三种介质中传播时发生折射的情况,设光在这三种介质中传播速度分别为Va、Vb、Vc,

光线在A、B、C三种介质中传播时发生折射的情况,设光在这三种介质中传播速度分别为Va、Vb、Vc,
如图所示为光线在A、B、C三种介质中传播时发生反射和折射的情况.设光在这三种介质中的传播速度分别为vA、vB、vC,则它们的大小关系应是:
A、 vA>vB>vC B、 vA< vC < vB
C、 vA> vC>vB D、 vC>vA> vB
解释A,B,C的折射率大小关系,谢谢
Freelau 1年前 已收到1个回答 举报

黄瓜和西红柿4567 幼苗

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