题目内容
如图所示,有一圆筒形容器,高H=20cm,筒底直径为d=15cm,人眼在筒旁某点向筒内壁观察,可看到内侧深h=11.25cm.如果将筒内注满水,观察者恰能看到筒壁的底部.求水的折射率.
![](http://thumb.1010pic.com/pic2/upload/papers/20140610/201406102236224047787.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140610/201406102236224047787.png)
设入射角r,折射角i,则sini=
,sinr=
,
根据折射定律得,n=
=
=
=1.33.![](http://thumb.1010pic.com/pic2/upload/papers/20140610/201406102236224047787.png)
答:水的折射率为1.33.
d | ||
|
d | ||
|
根据折射定律得,n=
sini |
sinr |
| ||
|
|
![](http://thumb.1010pic.com/pic2/upload/papers/20140610/201406102236224047787.png)
答:水的折射率为1.33.
![](http://thumb2018.1010pic.com/images/loading.gif)
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