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]
12.35: A student wants to set up an experiment with a tbnu bk h5r,6ccix509 khin convexn5g8e0qpi ev c0e+4gw lens of focal length f such that a thin real object produces a focused real image on a movable screen. At how many locations along the optical axis (principal axis) can the object be placed so that the distance +eg0ee54g 8ni0wc vpqbetween the object and the focused image on the screen is equal to 3f ?
A. There is no location.
B. There is exactly one location.
C. There are exactly two locations.
D. There are exactly four locations.
E. There are an infinite number of locations
参考答案: A
本题详细解析:
暂无
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