85问答库 > 某同学用某种单色光做双缝干涉实验时，已知双缝间距离为d，双缝到毛玻璃屏间距离为L，实验时先移动测量头

某同学用某种单色光做双缝干涉实验时，已知双缝间距离为d，双缝到毛玻璃屏间距离为L，实验时先移动测量头

2025-04-07 11:16:47
推荐回答（1个）
回答1：

（1）游标卡尺的主尺读数为0mm，游标读数为0.02×15=0.30mm，所以最终读数为0.30mm．
   游标卡尺的主尺读数为14mm，游标读数为0.02×24=0.48mm，所以最终读数为14+0.48=14.48mm
（2）根据双缝干涉条纹的间距公式△x=

L
d
λ，单色光的波长：λ＝
(x7?x1)d
6L

（3）双缝干涉装置上拨杆（如图F）的作用是通过调节拨杆使单缝片与双缝片相互平行．
故答案为：（1）0.30；14.48；（2）λ＝
(x7?x1)d
6L
；（3）单缝片与双缝片相互平行

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