UC知道初中物理题（英文）
来源：百度知道 编辑：UC知道 时间：2024/05/29 00:23:11
Which statement about the image formed by a thin converging lens is correct?
A it is always real and erect
B it is always real and inverted
C it is always virtual and erect
D it may be either virtual or real
给出原因。（好像是分小于f，f与2f之间，大于2f三种情况,f是焦距）
A it is always real and erect
B it is always real and inverted
C it is always virtual and erect
D it may be either virtual or real
给出原因。（好像是分小于f，f与2f之间，大于2f三种情况,f是焦距）
物距（下略）小于f，正立放大虚象
f与2f之间，倒立放大实像
大于2f,倒立缩小实像
另外
等于f，不能成像
等于2f,倒立等大实像
D成虚像和实像，有几种情况，具体我忘记了
当物镜距离小于f时virtual
其他real