Chemistry, asked by jollyk600, 12 days ago

light of wavelength 4000 Å on a sodium surface for which the threshold of photoelectrons is 5420 Å. what is the work function of sodium????

Answers

Answered by dhairyasingh741

1

Answer:

option C 2.29eV

Explanation:As ϕ0=hceλ0 (in eV)

=6.62×10−34×3×1085420×10−10×1.6×10−19=2.29eV

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