有关平面镜的问题(如作图题、计算题、问答题等)很多,但解题的依据主要是光的反射定律、平面镜成像原理及规律.下面择几个典型例子来说明解题的思路与方法. 例1 如图1(A)所示,发光点S发出的光线经镜面反射后,射向A点,试确定光线在镜面的入射点及光路图. There are many questions about plane mirrors (such as drawing questions, calculation questions, question questions, etc.), but the basis for problem solving is mainly the law of light reflection, principle and law of plane mirror imaging. Here are a few typical examples to illustrate the idea of ​​solving problems and Method. Example 1 As shown in Fig. 1(A), the light emitted by the light emitting point S is reflected by the mirror and then directed to the point A to determine the incident point of the light on the mirror surface and the light path diagram.