论文部分内容阅读
初中物理第二册第一章,光学的教学要求:使学生了解光在同一物质中沿直线传播的规律,光在真空中的速度;掌握光的反射定律,平面镜成像的特点;了解凸镜、凹镜的作用;初步掌握凸透镜成像规律并了解其应用.在成像作图中,课本较详细的介绍了平面镜成像光路图及折射成像的原理,应予以重视.根据初中物理教学大纲及《调整初中物理教学要求的意见》,为了使学生牢固地掌握概念,重点,难点,我们设计了如下的练习题.对于书本上有直接答案的练习题,限于篇幅,很少编入.练习:一、判断:把你认为正确的在( )内画上“√”你认为错误的画上“×”.1.证明光在同一物质中是沿直线传播的现象有:影子的形成和小孔成像等.( ).
The first chapter of the second volume of junior middle school physics, the teaching requirements of optics: make students understand the law of light in a straight line in the same material, the speed of light in a vacuum; grasp the law of light reflection, the characteristics of plane mirror imaging; understand the convex mirror, The role of the concave mirror; initially grasp the imaging law of the convex lens and understand its application. In the imaging mapping, the textbook introduces the principle of the plane mirror imaging light path diagram and refraction imaging in detail, and should pay attention to it. According to the junior middle school physics syllabus and "adjustment junior high school Opinions on physics teaching requirements, in order to enable students to firmly grasp the concept, focus, and difficulty, we have designed the following exercises. For books that have direct answers to the exercises, limited space, seldom included. Practice: First, determine :Draw the “×” in your painting that you think is correct, and you think it is wrong. 1. Prove that light travels in a straight line in the same material: shadow formation and hole imaging. ).