|
关注:1
2013-05-23 12:21
求翻译:an object in front of a converging lens is 4 times the size of its image.If the focal length of the lens is 15cm,how far from the lens is the object?是什么意思? 待解决
悬赏分:1
- 离问题结束还有
an object in front of a converging lens is 4 times the size of its image.If the focal length of the lens is 15cm,how far from the lens is the object?
问题补充: |
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区