关于透镜的一个问题.原题为英文.原题:The image of an object formed on a screen by a convex lens has height A.By moving the lens towards the screen,it is found that there is a second lens position at which another image of height B is
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![关于透镜的一个问题.原题为英文.原题:The image of an object formed on a screen by a convex lens has height A.By moving the lens towards the screen,it is found that there is a second lens position at which another image of height B is](/uploads/image/z/11275746-42-6.jpg?t=%E5%85%B3%E4%BA%8E%E9%80%8F%E9%95%9C%E7%9A%84%E4%B8%80%E4%B8%AA%E9%97%AE%E9%A2%98.%E5%8E%9F%E9%A2%98%E4%B8%BA%E8%8B%B1%E6%96%87.%E5%8E%9F%E9%A2%98%EF%BC%9AThe+image+of+an+object+formed+on+a+screen+by+a+convex+lens+has+height+A.By+moving+the+lens+towards+the+screen%2Cit+is+found+that+there+is+a+second+lens+position+at+which+another+image+of+height+B+is)
关于透镜的一个问题.原题为英文.原题:The image of an object formed on a screen by a convex lens has height A.By moving the lens towards the screen,it is found that there is a second lens position at which another image of height B is
关于透镜的一个问题.原题为英文.
原题:The image of an object formed on a screen by a convex lens has height A.By moving the lens towards the screen,it is found that there is a second lens position at which another image of height B is formed on the screen.The height of the object is
根号(AB) 为什么?
翻译:一个物体通过凸透镜投射到屏幕上的像高度是A,向屏幕方向移动凸透镜,直到物体的像高度是B,求物体的高度.
关于透镜的一个问题.原题为英文.原题:The image of an object formed on a screen by a convex lens has height A.By moving the lens towards the screen,it is found that there is a second lens position at which another image of height B is
因为物体、光屏位置没有发生变化,只移动了透镜,所以,第一次的物距,就是第二次的像距.
设物距离为u,像距为v,物体高为h
第一次成像时:h:A=u:v
第二次成像时:h:B=v:u ,变形为:B:h=u:v,即第二次的物距是第一次的像距
所以:h:A=B:h
解出:h=√AB
关键要理解第一次的物距是第二次的像距.
不明追问.