凸透镜成像规律及其应用部分在中考命题中出现概率达90%,多以填空、选择、实验、作图等形式出现. 例1 把凸透镜对准太阳光,可在距凸透镜10 cm处得到一个最小最亮的光斑,若将一物体放在此透镜的主光轴上距透镜30 cm处,则在透镜的另一侧可得到一个( ). A.倒立放大的实像B.倒立缩小的实像C.正立放大的虚像D.倒立等大的实像解析:太阳光可看作平行光,经凸透镜后会聚于一 Convex lens imaging law and its application part in the examination proposition in the probability of 90%, and more to fill in the blank, selection, experiment, drawing and other forms. Example 1 The convex lens to the sun, can get a minimum distance of 10 cm from the convex lens The brightest spot, if you place an object on the main optical axis of this lens from the lens 30 cm away, you get a () on the other side of the lens. A. Inverted enlarged real image B. Inverted reduced real image C The upright enlarged virtual image D. The upside down real image analysis: The sunlight can be seen as parallel light, after the convex lens will converge on one