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                </infopoint><Keyword>凸透镜成像的规律,精讲精练讲义</Keyword><CopyFrom></CopyFrom><SoftType></SoftType><CopyrightType></CopyrightType><DecompressPassword></DecompressPassword><OperatingSystem></OperatingSystem><UpdateTime>2019年09月16日</UpdateTime><RegUrl></RegUrl><DemoUrl /><DefaultPicUrl>/UploadFiles/nopic.gif
     </DefaultPicUrl><Intro>知识点1凸透镜成倒立、缩小的实像的条件 情景激疑如图所示，将蜡烛、凸透镜、光屏在一直线上依次排列，蜡烛</Intro><SoftIntro2>知识点1凸透镜成倒立、缩小的实像的条件 情景激疑如图所示，将蜡烛、凸透镜、光屏在一直线上依次排列，蜡烛放在离凸透镜尽量远的位置上，调整光屏到透镜的距离，使烛焰在光屏上成一个清晰的像。观察像的大小、正倒，分别测量物体、像到凸透镜的距离。要使这个实验顺利完成，对蜡烛、凸透镜和光屏的高度有什么要求？ 要想在光屏上要得到更小的清晰的像，如何调节蜡烛和光屏的位置?教材全解 1.条件:凸透镜到物体的距离大于二倍焦距时，像到凸透镜的距离在一倍焦距与二倍焦距之间，成倒立、缩小的实像。 2.凸透镜成倒立、缩小的实像时，物距越大，像距越小，像越小；物距越小，像距越大，像越大。 3.应用:照相机。知识拓展 利用如下作图法理解成像</SoftIntro2><SoftIntro>
    【内容简介】知识点1凸透镜成倒立、缩小的实像的条件 情景激疑如图所示，将蜡烛、凸透镜、光屏在一直线上依次排列，蜡烛放在离凸透镜尽量远的位置上，调整光屏到透镜的距离，使烛焰在光屏上成一个清晰的像。观察像的大小、正倒，分别测量物体、像到凸透镜的距离。要使这个实验顺利完成，对蜡烛、凸透镜和光屏的高度有什么要求？ 要想在光屏上要得到更小的清晰的像，如何调节蜡烛和光屏的位置?教材全解 1.条件:凸透镜到物体的距离大于二倍焦距时，像到凸透镜的距离在一倍焦距与二倍焦距之间，成倒立、缩小的实像。 2.凸透镜成倒立、缩小的实像时，物距越大，像距越小，像越小；物距越小，像距越大，像越大。 3.应用:照相机。知识拓展 利用如下作图法理解成像特点。(u>2f,f<v<2f)凸透镜成实像时，物距相同时，焦距越大，像越大。即学即练     例1  如图所示，把一支点燃的蜡烛放在距离凸透镜二倍焦距以外的地方，在透镜的另一侧调节光屏位置可找到一个清晰的像这个像是下图中的              </SoftIntro><SoftIntroEncode>知识点1凸透镜成倒立、缩小的实像的条件 情景激疑如图所示，将蜡烛、凸透镜、光屏在一直线上依次排列，蜡烛放在离凸透镜尽量远的位置上，调整光屏到透镜的距离，</SoftIntroEncode><special /><DownloadUrl>下载地址1|xa/2019/9/201991655736.docx</DownloadUrl><Content>&lt;p style="line-height: 150%"&gt;&lt;strong&gt;&lt;span style=";line-height:150%;font-family:宋体"&gt;知识点1凸透镜成倒立、缩小的实像的条件&lt;br /&gt; 情景激疑&lt;br /&gt;&lt;/span&gt;&lt;/strong&gt;&lt;span style=";line-height:150%;font-family:宋体"&gt;如图所示，将蜡烛、凸透镜、光屏在一直线上依次排列，蜡烛放在离凸透镜尽量远的位置上，调整光屏到透镜的距离，使烛焰在光屏上成一个清晰的像。观察像的大小、正倒，分别测量物体、像到凸透镜的距离。&lt;br /&gt;&lt;/span&gt;&lt;span style="font-family:宋体"&gt;&lt;img width="235" height="139" src="http://www.czwlzx.com/UEditor/themes/default/images/spacer.gif" style="background:url(http://www.czwlzx.com/UEditor/lang/zh-cn/images/localimage.png) no-repeat center center;border:1px solid #ddd" /&gt;&lt;/span&gt;&lt;span style=";line-height:150%;font-family:宋体"&gt;&lt;br /&gt;&lt;/span&gt;&lt;span style=";line-height:150%;font-family: 宋体"&gt;要使这个实验顺利完成，对蜡烛、凸透镜和光屏的高度有什么要求？&lt;br /&gt; 要想在光屏上要得到更小的清晰的像，如何调节蜡烛和光屏的位置?&lt;br /&gt;&lt;strong&gt;教材全解&lt;/strong&gt;&lt;br /&gt; 1.条件:凸透镜到物体的距离大于二倍焦距时，像到凸透镜的距离在一倍焦距与二倍焦距之间，成倒立、缩小的实像。&lt;br /&gt; 2.凸透镜成倒立、缩小的实像时，物距越大，像距越小，像越小；物距越小，像距越大，像越大。&lt;br /&gt; 3.应用:照相机。&lt;br /&gt;&lt;strong&gt;知识拓展&lt;/strong&gt;&lt;br /&gt; 利用如下作图法理解成像特点。(u&amp;gt;2f,f&amp;lt;v&amp;lt;2f)&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span style="font-size:14px;line-height: 115%;font-family:'Calibri','sans-serif'"&gt;&lt;img width="350" height="105" src="http://www.czwlzx.com/UEditor/themes/default/images/spacer.gif" style="background:url(http://www.czwlzx.com/UEditor/lang/zh-cn/images/localimage.png) no-repeat center center;border:1px solid #ddd" /&gt;&lt;/span&gt;&lt;span style="font-size:14px;line-height:115%;font-family:宋体"&gt;&lt;br /&gt;&lt;/span&gt;&lt;span style="font-size:14px;line-height:115%;font-family:宋体"&gt;凸透镜成实像时，物距相同时，焦距越大，像越大。&lt;br /&gt;&lt;strong&gt;即学即练&lt;/strong&gt;&lt;br /&gt;     例1  如图所示，把一支点燃的蜡烛放在距离凸透镜二倍焦距以外的地方，在透镜的另一侧调节光屏位置可找到一个清晰的像这个像是下图中的              &lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;br /&gt;&lt;/p&gt;</Content><banben>人教版</banben><area>不限</area><type>学案导学案</type><type2>免费</type2><ico>docx</ico><video>
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