物理光學問題 (凹透鏡)

1.當OBJECT置於凹透鏡和焦點間 由OBJECT底部發出的光線經折射後的方向 是否視作由IMAGE底部發出
This is generally true disregard the position of the object from the lens. The bottom of the image is formed by the intersection of light rays (either actual intersection in the case of real image, or apparent intersection in the case of virtual image) that come from the bottom of the object.

2.當OBJECT置於遠距焦點的一側 由OBJECT底部發出的光線經折射後的方向 是否視作由焦點發出.
Definitely no. As said in the answer to Q1 above, light rays from the bottom of an object will intersect, or appears to intersect, at the point where the bottom of the image is located.

Light ray (3) in the second diagram is wrongly drawn.

除左第2張圖 第(3)條線有問題之外，

第1張圖由H點發出的水平光線應該是實線而並不是虛線來的！


---小弟小見也

第2張圖不是錯了嗎? 不平衡的(1), (3)連到focal plane的同一點啦...(3)錯了