The threshold wavelength for a metal is 500 nm. What is the work function of the metal?
Q1. The threshold wavelength for a metal is 500 nm. What is the work function of the metal?
Answer: 2.48 eV
Explanation: Work function = hc/λ = (6.63×10^-34 × 3×10^8)/(500×10^-9 × 1.6×10^-19) = 2.48 eV. Other options miscalculate.