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凸透镜成像时像距是如何确定的
更新时间: 2020-10-10 00:00:00  

凸透镜成像规律是指物体放在焦点之外,在凸透镜另一侧成倒立的实像,实像有缩小、等大、放大三种。物距越小,像距越大,实像越大。物体放在焦点之内,在凸透镜同一侧成正立放大的虚像。物距越小,像距越小,虚像越小。

光屏到凸透镜的距离,当物体在一倍焦距和二倍焦距之间,光屏在二倍焦距以外;当物体在二倍焦距以外,光屏在一倍焦距和二倍焦距之间。

关键词: 凸透镜 如何 确定

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