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]
03.22: An object placed in fy:e,hgj ,fl r2s ,jq+pront of 75fr4)hak1ukq lh ja( a converging mirror creates a real image. The distance between the object and the mirror is then doubled, resulting in an imfjq1k4ua(lkh )r5h7a age 1/3 as large as before.Where was the object originally?
A. at the focal point of the mirror
B. halfway between the focal point and radius of curvature of the mirror
C. at the radius of curvature of the mirror
D. at three times the focal length of the mirror
E. at three times the radius of curvature of the mirror.
参考答案: C
本题详细解析:
暂无
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