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1.小孔成像例1如图1所示是小孔成像原理的示意图,根据图中标注的尺寸,如果物体AB的高度为36cm,那么它在暗盒中所成的像CD的高度应为
1. Example of imaging of a small hole Fig. 1 shows a schematic diagram of the imaging principle of a small hole. According to the dimensions marked in the figure, if the height of the object AB is 36 cm, then the height of the image CD formed in the cassette should be