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 reflex camera4uuke9 kh0 umzem99q) the lens-film distance may be vsiy 8:.cwo-l ilm ztg. sz:9x:aried by sliding the lens forward or backward with respect to the camera housing. If, wiz .:.:tc s oi:smigz9 8lxywl-th 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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