Physics Unit23: Light and Geometric Optics (id: 88100ba34)

本题目来源于试卷: Physics Unit23: Light and Geometric Optics，类别为 通用国际物理

[单选题]
A object is 12 cm in fb x qf0l5-lcn6kehmi uh-+ ,a0ront of a concave mirror, and the image is 3.0 cm in front of thhu-iekha+m , 0e mirror. What is the focal length of the mirror?

A. $15 \; cm$
B. $4.0 \; cm$
C. $2.4 \; cm$
D. $1.3 \; cm$


参考答案:  C


本题详细解析: 暂无

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