单选题:在简谐波传播过程中,沿传播方向相距λ/2(λ为波长)的两点的振动速度必定(  )。

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  • 题目类型:单选题
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题目内容:
在简谐波传播过程中,沿传播方向相距λ/2(λ为波长)的两点的振动速度必定(  )。 A.大小相同,而方向相反
B.大小和方向均相同
C.大小不同,方向相同
D.大小不同,而方向相反

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答案解析:

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