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 microscope has an .xks4erg + s5gobjective lens of focal length 1.4 mm and an eyepiece of+m q7gk8gihcddsca8j8) x soxi+85e 4 focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. How far apart are txk8gq8sg++ 84dej)57a xic 8 cmdho sihe lenses?
A. $20 \; mm$
B. $21 \; mm$
C. $23 \; mm$
D. $41 \; mm$
参考答案: D
本题详细解析:
暂无
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