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一物体经凸透镜在光屏上成一个实像如果这时用纸将透镜遮住一半则 A．屏上不能成像b．屏上成像是原来的一半c．要移动光屏才能成清晰的像d Template






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sketch 2810 Lennon by El Harouati Nassera
sketch 323
sketch 5340 Amazing Dragon
sketch 1477 123 viva l 'algerie
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sketch 245 Fishy
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sketch 1061 garota ao vento

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sketch 125
sketch 3337 Uryuu Minene by Michael Angcay
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sketch 5009 Elen Jager from Attack on Titan
sketch 5306 Katarina by Mirnes Sinanovic
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sketch 3743 Just for fun
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tomski一物体经凸透镜在光屏上成一个实像如果这时用纸将透镜遮住一半则 a．屏上不能成像b．屏上成像是原来的一半c．要移动光屏才能成清晰的像d coloring
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一物体经凸透镜在光屏上成一个实像如果这时用纸将透镜遮住一半则 A．屏上不能成像B．屏上成像是原来的一半C．要移动光屏才能成清晰的像D sketch template
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在凸透镜成像实验中将光屏取下后用人眼在光屏位置看能否看到清晰像（光屏上成清晰像） 百度经验 sketch template
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一物体位于凸透镜前的主光轴上当遮住凸透镜上面一半后物体在光屏上所成的像是 A只有上半部亮度不变 B只有下半部亮度不变 C 与原来 sketch template
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如图所示一束平行光经过凸透镜后在光屏上得到一个最小最亮的光．由此可知凸透镜对光有 作用它的焦距是 Cm． 题目和参考答案——青夏 sketch template
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如图所示p字形光物经透镜L在毛玻璃光屏M上成一实像观察者处于E处他看到屏M上的像的形状为 A．q B．pC．d D．b 题目和 sketch template
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在光具座上自左右依次竖直放置一个凹透镜凸透镜和平面镜两个透镜的主光轴重合凸透镜的焦距为f此时两个透镜之间的距离为L．在凹透镜的左侧有 sketch template
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一束平行光经过凸透镜折射后的传播方如图甲所示由图可知此透镜的焦距为 12cm当把烛焰放在此凸透镜左侧28cm处时如图乙所示则该凸 sketch template
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在利用光具座进行凸透镜成像的实验探究中 1如下图所示一束平行于凸透镜主光轴的光线经过凸透镜后在光屏上形成了一个最小最亮的光由图 sketch template
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在探究凸透镜成像规律的实验中1让一束平行光正对凸透镜照射在凸透镜后的光屏上接收到一个最小最亮的光由此可以测出凸透镜的焦距焦距2 sketch template