题目内容
爱因斯坦提出了光量子概念并成功地解释光电效应的规律而获得1921年的诺贝尔物理学奖.某种金属逸出光电子的最大初动能
与入射光频率
的关系如图所示,其中
为极限频率.从图中可以确定的是( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241743101911797.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824174309427433.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824174309692264.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824174309911322.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241743101911797.jpg)
A.逸出功与![]() |
B.![]() |
C.![]() |
D.图中直线的斜率与普朗克常量有关 |
D
试题分析:金属的逸出功是由金属自身决定的,与入射光频率无关,其大小
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824174310925594.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824174311237781.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824174311486459.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824174311751561.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824174312095391.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824174311237781.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824174312578732.png)
故选D.
点评:只要记住并理解了光电效应的特点,只要掌握了光电效应方程就能顺利解决此题,所以可以通过多看课本加强对基础知识的理解.
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目