本题目来源于试卷: Lenses and Mirrors，类别为 美国物理杯赛(Physics Bowl)
[单选题]
99.38: An image is formed on a screen by g; wv4,qfhhnd :lmtf1+0 g)kz a convergent iilq w0svon/* lxd++ 9lens. If the top half of the le vswld*ix ++ 9qilno0/ns is then covered what will happen to the image?
A. the image is dimmer but otherwise unchanged
B. the image becomes half as big
C. only the top half of the image is produced
D. only the bottom half of the image is produced
E. the image becomes half as big and is inverted from it original position
参考答案: A
本题详细解析:
暂无
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