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 fhh nw;s gootdiv lv-z1ezsi3ie90. 409 hji7*ormed on a kee 4c 8gxq169 2x aw /zh13vsnryu7ukscreen by a convergent lens. If the top half of the lens is then covered what will rah7 c8g4we611nu2xkx /q3 9esz yvuk 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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