Discussion of Effect of Aperture Size and Photocell Receiving Distance on Experimental Results

In this paper,the influence of the distance between the photoelectric tube and the mercury lamp and the measurement error of the planck constant is studied by the photoelectric effect volt-ampere characteristic and the plancks constant measurement experiment.The results shown that with the increase in apeture diatance,the relative error between the light source and the photoelectric tube is smaller,and the closer the planck constant is near the theoretical value.