本题目来源于试卷: Physics Unit25: Optical Instruments，类别为 通用国际物理
[单选题]
In a single-lens reflel8fy 2ai:yjo qe4zp)0 x camera thedk2w f 0kv, o(tp3kim; lens-film distance may be varied by sliding the lens k;o,02fkmv td3pwk ( iforward or backward with respect to the camera housing. If, with such a camera, a fuzzy picture is obtained, this means that
A. the lens was too far from the film.
B. the lens was too close to the film.
C. too much light was incident on the film.
D. too little light was incident on the film.
E. none of the given answers
参考答案: E
本题详细解析:
暂无
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