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The threshold frequency of unknown metal surface is fo = 1.82 X 10 Hz. Calculate its workfunction of the metal surface. A. -0.02 eV. B.

The threshold frequency of unknown metal surface is fo = 1.82 X 10 Hz. Calculate its workfunction of the metal surface. A. -0.02 eV. B. 1.67 eV. C. 5.10 eV. D. 7.54 eV

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