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平面镜成像问题是初中光学部分的一个重点,它的题型多变,解法灵活,能有效地考查对基础知识的理解程度和分析运用知识解决问题的能力.近几年在竞赛,中考中山现了平面镜动态变化题型,许多同学因没有掌握分析此类题型的方法造成失分较多,下面就此类问题介绍解答方法,供参考.一、已知物体的运动状态,判断虚像的运动状态.例1 水平桌面上斜放着一个平面镜,镜面
The problem of plane mirror imaging is an important part of the junior high school optics. It has a variety of questions and flexible solutions. It can effectively examine the understanding of basic knowledge and analyze the ability to use knowledge to solve problems. In recent years, in the contest, the examination in Zhongshan Plane mirror dynamic change problem type, many students because they did not grasp the method of analysis of this type of problem caused by more points, the following on this type of problem to introduce the solution method, for reference. First, the movement of known objects, to determine the virtual image of the movement. Example 1 A flat mirror is placed diagonally on the horizontal table, with a mirror