透镜成像的两条规律及其应用江苏丹阳市延陵中学贡建荣物体沿透镜主轴移动时，其像的移动方向、放大率的变化具有一定的规律．本文试就凸透镜成实像、凸透镜成虚惊、凹透镜成虚像三种情况，利用作图法进行总结，得出两条规律，并举例说明规律的应用．１．两条规律的得出物... The two laws of lens imaging and its application When Gong Jianrong objects of Yanling Middle School in Danyang City, Jiangsu Province, move along the lens’s main axis, the image’s movement direction and magnification change have certain rules. In this paper, three cases of convex lens into a real image, a convex lens into a false alarm, and a concave lens into a virtual image are used. The drawing method is used to summarize and obtain two laws, and an example is given to illustrate the application of the law. 1. Two regular draws...