Answer:
Energy of the photon is 2.90×10⁻¹⁹J
Explanation:
Hello,
The question above requires us to calculate the energy of a photon with a specific wavelength. To do this, we need to relate energy and wavelength through and equation.
E = hc/λ
E = energy of the photon
h = Planck's constant = 6.626×10⁻³⁴Js
c = speed of light = 3.0×10⁸m/s
λ = wavelength of the photon = 685nm = 685×10⁻⁹m
E = [6.626×10⁻³⁴ × (3.0×10⁸)] / 685×10⁻⁹
E = 2.90×10⁻¹⁹J
The energy of the photon is 2.90×10⁻¹⁹J
