同学们在解答光学问题时,常常会出现审题不严、推理无据、忽视条件、思维混乱、考虑不周等原因导致错解的现象,往往过后还不知道产生错误的原因是什么.针对同学们解题常出现的错误,指出错在哪里,分析错误发生的原因,指点如何分析题意,阐述正确的解题方法和思路,最后给出正确的答案. When students are answering optical issues, they often experience misunderstandings due to lack of discipline, reasoning, neglect of conditions, confusion, and misconceived thinking. Often, they do not know what causes the mistakes. We often make mistakes in problem solving, point out where the mistakes are, analyze the causes of mistakes, how to analyze the meaning of the questions, explain the correct methods and ideas for solving problems, and finally give the correct answers.