题目内容
用一束能量为E的单色光照射处于n=2的一群氢原子,这些氢原子吸收光子后处于另一激发态,并能发射光子,现测得这些氢原子发射的光子频率仅有三种,分别为
、
和
,且
<
<
。则入射光子的能量E应为
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124134144307.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124134175333.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124134206331.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124134144307.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124134175333.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124134206331.png)
A.h![]() | B.h![]() | C.h(![]() ![]() | D.h(![]() ![]() |
AD
从激发态向基态跃迁,释放的光子种类有
,其中频率越大的能量越高,直接从激发态跃迁到基态的,因为原子开始处于n=2的能级,后吸收光子后能发出3种光子,说明原子跃迁到了n=3的能级,因此入射光的的能量为h
或者h(
-
),故答案选AD
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124134643381.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124134144307.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124134206331.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124134175333.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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