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 lens of fojnm-ei5)ub l( gzrn27r ca+6mcal lengtne lj.(+x x9o j86h;e tccppp*h 1.4 mm and an eyepiece of focal length 20 mm, adj9h e.+;o c8ct(*lx e pxnjpj6pusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. 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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