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]
11.45: An object is placedozm+to gq-lw*v3 c; fehq 94-x in frv crpr:op1, q/ont of a thin converging lens resulting in a focused image forming on a screen. If the bottom half of the lens were covered with black paper, what happens to the imaqro:/rp v, pc1ge on the screen?
A. There is no change of any kind to the image.
B. Only the top half of the object is focused into an image on the screen.
C. Only the top half of the object is focused into an image on the screen and it now is half the size.
D. The image is fully formed, only it now is half as large.
E. The image is fully formed, only it is dimmer.
参考答案: E
本题详细解析:
暂无
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