Physics Unit25: Optical Instrument (id: 315ef9b31)

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本题目来源于试卷: Physics Unit25: Optical Instrument，类别为 Generic Physics

[单选题]
A microscope has an object( tyz)b ac 9x 5dvjw4vz7dx39aive lens of focal length 1.4 mm a 1)efrr2j qnwjki0 k 8.q:9xkind an eyepiece of focal len1wr 2 qfi9:) kx0j.qj8en kkirgth 20 mm, adjusted 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