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2004年高考理综第 21 题突出了能力问题立意、现实问题立意的方向,有一定的难度和区分度.下面笔者就学生解答本题所出的错误谈几点粗浅看法.审视1 成像概念模糊,不会转换物理模型例1.(2004年理综第21题)发出白光的细线光源ab,长度为 l0,竖直放置,上端a恰好在水面以下,如图
The 21st issue of the 2004 College Entrance Examination has highlighted the orientation of the problem of probabilistic competence and the problem of realistic problems. There is a certain degree of difficulty and differentiation. The following writer talks about the mistakes made by students in answering this question. View 1 The concept of imaging is vague. The physical model will not be converted. Example 1. (Summary of the 21st issue of 2004) The thin line light source ab emitting white light, length l0, is placed vertically, and the upper end a is just below the water surface, as shown in the figure.