How to determine the focal length of convex/concave lens
圖解thx
[Phy]20分 速入
2008-03-03 3:25 am
回答 (1)
2008-03-03 4:59 am
✔ 最佳答案
to determine the focal length of convex lens , we can put the convex lensnear the window, a sharp image will be formed behind the lens.
the distance between the lens and the image is the focal length.
收錄日期: 2021-04-13 16:36:45
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080302000051KK02979