题目内容（请给出正确答案）

[主观题]

A metal surface illuminated by 8.5×1014 Hz light emits electrons whose maximum energy is 0

.52 eV. The same surface illuminated by 12.0×1014 Hz light emits electrons whose maximum energy is 1.97 eV. The work function of the metal is (B )

A、7.2 eV

B、3.0 eV

C、12.4 eV

D、47.5 eV

提问人：网友sasame0516 发布时间：2022-01-07

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