本题目来源于试卷: Nuclear & Quantum Physics E.2 Quantum Physics，类别为 IB物理学
[单选题]
In a vacuum chamber, electromao:7bb1nrla4 a) fv7aid7ui b+gnetic-n4 /j/ei/li dgzoz2n radiation of frequencies $f_A$<$f_B$ just manage to produce a non-zero photocurrent from metals A and B respectively. When illuminated by an electromagnetic radiation of frequency $f$>$f_B$, the stopping voltage for the photocurrents from plates A and B are recorded to be $V_A$ and $V_B$ respectively.
Which of the following is true about $V_A$ and $V_B$?
A. $V_A$<$V_B$
B. $V_A>V_B$
C. $V_A=V_B$
D. Information provided is insufficient to compare $V_A$ and $V_B$
参考答案: B
本题详细解析:
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