本题目来源于试卷: Physics Unit25: Optical Instruments，类别为 通用国际物理
[单选题]
The near point of a f lf*s-) xt8fazr)r2cb arcpw)io vdvcrns g09d5tk 9hk-p-804esighted person is 100 cm. She places reading glasses close to her eyes, and with them she can comfortably read a newspaper at a distance of 25 cm. What lens power ispccsk d 0e n0t)kp-h5vo9r-w9vi8d4g required?
A. +2.5 D
B. +3.0 D
C. +3.2 D
D. -2.0 D
参考答案: B
本题详细解析:
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