# Problem: What is the energy (in eV) of a photon of visible light that has a wavelength of 500 nm?

###### FREE Expert Solution

The energy of a photon:

$\overline{){\mathbf{E}}{\mathbf{=}}{\mathbf{h}}{\mathbf{f}}{\mathbf{=}}\frac{\mathbf{h}\mathbf{c}}{\mathbf{\lambda }}}$

Where h is plank's constant, c is the speed of light, f is the frequency and λ is the wavelength.

h = 6.62 × 10-34 J/s

λ = 500 nm(10-9m/1nm)

86% (51 ratings)
###### Problem Details
What is the energy (in eV) of a photon of visible light that has a wavelength of 500 nm?