1有两束光线入射凸透镜.如图所示已画出第1束光入射透镜前的径迹及第2束光经过透镜后的径迹.请画出�凸透镜左侧的焦点f�第1束光出射 Template




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tomski1有两束光线入射凸透镜.如图所示已画出第1束光入射透镜前的径迹及第2束光经过透镜后的径迹.请画出�凸透镜左侧的焦点f�第1束光出射 coloring