Answer:
3.71 eV
Explanation:
λ = Wavelength of light = 224 nm = 224 x 10⁻⁹ m
c = speed of electromagnetic wave = 3 x 10⁸ m/s
V₀ = stopping potential = 1.84 volts
W₀ = Work function of the metal = ?
Using the equation
[tex]\frac{hc}{\lambda } = eV_{o} + W_{o}[/tex]
[tex]\frac{(6.63\times 10^{-34})(3\times 10^{8})}{224\times 10^{-9} } = (1.6\times 10^{-19})(1.84) + W_{o}[/tex]
[tex]W_{o}[/tex] = 5.94 x 10⁻¹⁹
[tex]W_{o}[/tex] = 3.71 eV
