Physics Unit25: Optical Instruments (id: 039a9883f)

本题目来源于试卷: Physics Unit25: Optical Instruments，类别为 通用国际物理

[单选题]
A refracting telescope h*t)lgapgmjhr7( 0/ ex as a towao7*/,qs9f yqh*gmagnification $m$. 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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