题目内容
如图所示,一细束由a光和b光组成的复色光由空
气中射到一块长方形玻璃砖的上表面,透过玻璃砖后从下表面射出,若用n1和n2分别表示玻璃砖对a光和b光的折射率,则n1_______n2(填“>”,“<”或“=”)。![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241347019192279.png)
气中射到一块长方形玻璃砖的上表面,透过玻璃砖后从下表面射出,若用n1和n2分别表示玻璃砖对a光和b光的折射率,则n1_______n2(填“>”,“<”或“=”)。
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241347019192279.png)
>
由折射率定义式,a光的折射率
, b光的折射率
,由图知
,所以n1>n2
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824134701950721.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824134701981753.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824134702013460.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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