题目内容
如图为一列沿
轴正方向传播的简谐横波在
时刻的波形图及传播的距离,已知该波的周期为
,
、
、
、
为沿波传播方向上的四个质点,下列判断正确的是:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241919030292838.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824191858786266.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824191859472267.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824191900065304.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824191900705283.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824191901313299.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824191901875249.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824191902483321.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241919030292838.png)
A.在![]() ![]() |
B.从![]() ![]() ![]() |
C.在![]() ![]() |
D.从![]() ![]() ![]() ![]() |
BC
试题分析:在
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824191903716497.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824191901313299.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824191900705283.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824191910096443.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824191859472267.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824191900705283.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824191901313299.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824191901875249.png)
点评:本题难度较小,理解在波的传播方向上质点不随波迁移,能够判断各质点的振动方向,波长、速度、周期的关系是关键
![](http://thumb2018.1010pic.com/images/loading.gif)
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