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 thin convex lens of focal nkvsw+ vnxf9: k (f1jl123vvwvwx2jw v1n+1k9v3sf nl: f vk(t ere4x7 6coql:u m- ot 6ji)(*kvwa,hlength 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 between the object and the focused image on the screen6o, ceu* ovt)he7k-:jmr wq6lt x(a4 i 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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