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 objective levc 6dnvm 921gh2 qyr4o3dyvv7 ns of focal length 1.4 mm and an eyepiece ofkaxj 14-;) )iu0z tiy kgenq)mhm)b p1 focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the obnit)qh)ubjzk0-1i 1;p4ma xeg) myk )jective. How far apart are the 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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