Violet Light (λ = 430 Nm)is Incident on a Piece

Multiple Choice

Violet light (λ = 430 nm) is incident on a piece of potassium (φ = 2.20 eV) .What is the maximum kinetic energy of the ejected photoelectrons? (h = 6.63 × 10−³⁴ J⋅s,c = 3.00 × 10⁸ m/s,1 eV = 1.60 × 10−¹⁹ J,and 1 nm = 10−⁹ m)

A) 2.43 eV
B) 0.69 eV
C) 2.89 eV
D) 5.09 eV
E) ​0.96 eV