题目内容
(6分)下列说法正确的是 (填正确答案标号。选对1个得3分,选对2个得4分,选对3个得6分。每选错1个扣3分,最低得分为0分)
E.根据玻尔理论可知,氢原子辐射出一个光子后,氢原子的电势能减小,核外电子的运动速度增大
A.![]() ![]() |
B.发现中子的核反应方程是![]() ![]() ![]() ![]() |
C.20个![]() ![]() |
D.一定强度的入射光照射某金属发生光电效应时,入射光的频率越高,单位时间内逸出的光电子数就越多 |
ABE
试题分析:根据质量数与电荷数守恒可得
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003945226410.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003945242391.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003945273301.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003945289292.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003945304338.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003945320268.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003945507881.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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