Physics Unit25: Optical Instruments (id: 039a9883f)

本题目来源于试卷: Physics Unit25: Optical Instruments，类别为 国际高中通用物理

[单选题]
A refracting telescope has)-i e,ccc.iyyjb39 ktw- w5g pbg*rqa n-wk5; t2gb k 3 znpb,7vhp3l9 a magnification $m$. If the objective focal length is doubled and the eyepiece focal length is halved, what is the new magnification?

A. $4 \; m$
B. $2 \; m$
C. $m/2$
D. $m/4$


参考答案:  A


本题详细解析: 暂无

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