When a plane mirror is rolated through an angle 10度,a light way reflected from the mirror is roated throught
a.5度
b.10度
c.20度
d.30度
收錄日期: 2021-04-13 14:32:03
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061021000051KK00938