题目内容
一束光由空气入射某一介质,入射角是 60°,其折射光线与反射光线恰好相互垂直。求此束光在该介质中的折射率和传播速度各是多少?![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241332078031012.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241332078031012.png)
已知光入射角 i = 60°,由右图可知折射角 r = 30°,…………(2 分)
根据光的折射定律得,光在该介质中的折射率为:
n =
=
,…………………………………(3 分)
光在该介质中的速度为:
V =" C/" n = 3×108 /
=
×108(m/s) ……………………………(3 分)
根据光的折射定律得,光在该介质中的折射率为:
n =
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824133207897534.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824133207975344.png)
光在该介质中的速度为:
V =" C/" n = 3×108 /
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824133207975344.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824133207975344.png)
已知光入射角 i = 60°,由右图可知折射角 r = 30°,…………(2 分)
根据光的折射定律得,光在该介质中的折射率为:
n =
=
,…………………………………(3 分)
光在该介质中的速度为:
V =" C/" n = 3×108 /
=
×108(m/s) ……………………………(3 分)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241332078031012.png)
根据光的折射定律得,光在该介质中的折射率为:
n =
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824133207897534.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824133207975344.png)
光在该介质中的速度为:
V =" C/" n = 3×108 /
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824133207975344.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824133207975344.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目