1,小明想用焦距为8mm和20mm的A,B两个凸透镜组装一个显微镜.但他为选用物镜和目镜犯难,请你帮她分析用该如何去合理选择?2,有两个凸透镜m1,m2它们的焦距分别为f1=2.5cm,f2=20cm,怎样组装方能成为
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![1,小明想用焦距为8mm和20mm的A,B两个凸透镜组装一个显微镜.但他为选用物镜和目镜犯难,请你帮她分析用该如何去合理选择?2,有两个凸透镜m1,m2它们的焦距分别为f1=2.5cm,f2=20cm,怎样组装方能成为](/uploads/image/z/6064674-42-4.jpg?t=1%2C%E5%B0%8F%E6%98%8E%E6%83%B3%E7%94%A8%E7%84%A6%E8%B7%9D%E4%B8%BA8mm%E5%92%8C20mm%E7%9A%84A%2CB%E4%B8%A4%E4%B8%AA%E5%87%B8%E9%80%8F%E9%95%9C%E7%BB%84%E8%A3%85%E4%B8%80%E4%B8%AA%E6%98%BE%E5%BE%AE%E9%95%9C.%E4%BD%86%E4%BB%96%E4%B8%BA%E9%80%89%E7%94%A8%E7%89%A9%E9%95%9C%E5%92%8C%E7%9B%AE%E9%95%9C%E7%8A%AF%E9%9A%BE%2C%E8%AF%B7%E4%BD%A0%E5%B8%AE%E5%A5%B9%E5%88%86%E6%9E%90%E7%94%A8%E8%AF%A5%E5%A6%82%E4%BD%95%E5%8E%BB%E5%90%88%E7%90%86%E9%80%89%E6%8B%A9%3F2%2C%E6%9C%89%E4%B8%A4%E4%B8%AA%E5%87%B8%E9%80%8F%E9%95%9Cm1%2Cm2%E5%AE%83%E4%BB%AC%E7%9A%84%E7%84%A6%E8%B7%9D%E5%88%86%E5%88%AB%E4%B8%BAf1%3D2.5cm%2Cf2%3D20cm%2C%E6%80%8E%E6%A0%B7%E7%BB%84%E8%A3%85%E6%96%B9%E8%83%BD%E6%88%90%E4%B8%BA)
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