1996年高考物理试题第7道单选题是一道典型的凸透镜成像的问题。很多考生错认为这题讨论的是物距变化时、像距如何变化,因而错选成B,这是审题不慎所致。下面想就这道题解答,研究凸透镜成像时物像间距如何变化, The seventh issue of the physics test in the 1996 college entrance examination was a typical convex lens imaging problem. Many candidates mistakenly believed that the topic discussed was the change in the distance between objects and how the image distance changed. Therefore, it was mistakenly selected as B. This was due to carelessness. Now I want to answer this question and study how the image pitch changes when the convex lens is imaged.