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透镜成像后,其全像可视范围的确定,是中学物理中极常见的光路作图题。若所成的像是虚像,可视范围确定比较方便,如图1和图2中的斜线部份所示。
After the lens is imaged, the determination of the holographic visual range is a very common light path drawing problem in middle school physics. If the resulting image is a virtual image, the visual range can be determined more conveniently, as shown by the slashes in Figure 1 and Figure 2.