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凸透镜成像问题是各地中考的热点,下面列举几例凸透镜成像的问题进行归类分析,供大家参考. 一、依据像的特点确定物距例1 如图1,在凸透镜成像的实验中,若将蜡烛依次放在a、b、c、d四点,则在光屏上得到的像最大时,蜡烛一定是放在了点. 分析与解:根据凸透镜成像特点,当蜡烛放在凸透镜的焦距外时.在光屏上能成实像,且蜡
Convex lens imaging problem is a hot spot in local exams. The following is a list of several cases of convex lens imaging problems for classification analysis, for your reference. First, based on the characteristics of the image to determine the object distance Example 1 In Figure 1, in the experiment of convex lens imaging, if Candles are placed at the four points a, b, c, and d in turn, so when the image on the screen is maximized, the candle must be placed on the point. Analysis and solution: According to the imaging characteristics of the convex lens, when the candle is placed outside the focal length of the convex lens At the time, on the screen can be real, and the wax