本题目来源于试卷: Virtual Object，类别为 美国物理杯赛(Physics Bowl)
[单选题]
15.34: An upward-pointing object is ko m7a*6s afd+placed 15.0 cm to the l pc r: r;pimnzh(c50f:eft of a lens system. The first lens is convex with focal length 10.0 cm. The second lens is convex with focal length 10 c???? and its locatio rnh:5fr czc pp; 0i:m(n from the first lens is varied from 10 cm away to 110 cm away. Which one of the following choices best represents the description of the final image formed as the second lens is moved from x = 10 cm to x = 110 cm from the first lens?
A. the x = 10 cm away is Real & pointing downward x = 110 cm away is Virtual & pointing downward-Real & pointing upward
B. the x = 10 cm away is Virtual & pointing downward x = 110 cm away is Virtual & pointing upward-Real & pointing upward
C. the x = 10 cm away is Virtual & pointing upward x = 110 cm away is Virtual & pointing downward-Real & pointing upward
D. the x = 10 cm away is Real & pointing downward x = 110 cm away is Virtual & pointing downward-Real & pointing upward
E. the x = 10 cm and x = 110 cm away is Virtual & pointing downward-Real & pointing upward
参考答案: A
本题详细解析:
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