如图凸透镜放置在水面上方主光轴与水面重合a为焦点现水面上方点光源s�出一条光线sa在水面即�生了反射又�生了折射请补全光路.——青夏 Template




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tomski如图凸透镜放置在水面上方主光轴与水面重合a为焦点现水面上方点光源s�出一条光线sa在水面即�生了反射又�生了折射请补全光路.——青夏 coloring