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 concave spherical mirror has wykqqd3 qbm2n c :;5m5f.j yj+a fo :e*cz yz7mx;scal length of 20 cm. An object is placed 30 cm in fre*my;x:c sz7 zont of the mirror on the mirror's axis. Where is the image located?
A. 12 cm behind the mirror
B. 12 cm in front of the mirror
C. 60 cm behind the mirror
D. 60 cm in front of the mirror
参考答案: D
本题详细解析:
暂无
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