物理phy~~~~~~

哈哈哈，我本來都唔知有咩唔同，想極都想唔通。但再加加加加留意一下就有答案了。

你A的圖底那條線是由物的底部"射"出，所以當然是形成像的底部。
(但係條折射線，延伸向後面就去左像的頂部，所以不對囉)

而B的圖底那條線都是由物的底部"射"出，所以當然是形成像的底部啦!! =]
(所以B對丫)

現在你明了吧!? ^_^

今天考試丫，不好意思^_^"

The ray light that comes from the bottom of the object should NOT be formed on the top of the image.

Since the top of the image is located by the intersection of the parallel ray and the ray passing through the lens centre, the light ray from the bottom of the object must not pass through this point.

The bottom of the image must be located at a point on the principal axis and below the top image point.