近日阅读了一些资料,发现有这样一道题目: 如图1所示的光电管, 其阴极K在频率为v的单色光照射下产生光电效应。阳极和阴极之间所加电压为U。电流表测得电路中饱和光电流为I,求光电子对阳极板的平均作用力。(电子的质量为m,电量为e,阴极材料的极限频率为v_0。) Recently, I read some data and found that there is such a problem: Photocathode as shown in Figure 1, the cathode K of the photoelectron effect under monochromatic light with a frequency of v. The voltage applied between the anode and the cathode is U. The ammeter shows that the saturation photocurrent in the circuit is I, and the average photoelectron force on the anode plate is found. (The electron mass is m, the charge is e, and the cathode material has a limit frequency of v_0.)