追加~~~wave問題...求解答..thx~~
2011-12-01 2:43 am
我想問點解個separation between the fringe 係要=0.2/12???咁如果佢5係由dark度去dark region既話=0.2m既話...其實有可能要0.2/13 bor...求解答thx
圖片參考：http://imgcld.yimg.com/8/n/HA04593330/o/701111300058513873406070.jpg
回答 (1)
2011-12-01 7:20 am
✔ 最佳答案
Assume there are nodal lines at the two marks. Hence, 13 nodal lines indicate that there are 12 peaks in between a spacing of 0.2 m.Therefore, separation between bright fringes = 0.2/12 m = 0.0167 m
Slit separation = (7x10^-7) x 1.5/0.0167 m = 6.28 x 10^-5 m
收錄日期: 2021-04-29 17:43:50
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20111130000051KK00585