Question: 3 0 ) The work function of a certain metal is 1 . 9 0 eV . What is the longest wavelength of light that

30) The work function of a certain metal is 1.90 eV. What is the longest wavelength of light that can cause photoelectron emission from this metal?
A)653 nm
B)14.0 nm
C)231 nm
D)62.4 nm
E)344 nm

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