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MCQ
The threshold wavelength for photoelectric emission is 5000 Å. The work function is: (hc = 12400 eV·Å)
Physics
A 1.24 eV
B 2.48 eV
C 3.72 eV
D 0.62 eV
Explanation

φ = hc/λ₀ = 12400/5000 = 2.48 eV

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