A photon has a wavelength of 500nm what is the energy associated

Given: Plank's constant h = 6.626 x 10⁻³⁴ J. s

Speed of light c = 2.998 x 10⁸ m/s

Wavelength λ = 500 nm convert to meter = 5 x 10⁻⁷ m

Required: Energy E = ?

Formula: E = hc/λ

E = (6.626 X 10⁻³⁴ J. s) (2.998 X 10⁸ m/s) / 5 x 10⁻⁷ m

E = 3.97 X 10⁻¹⁹ J or in termS of electron volt

E = 2.48 eV