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Can anyone here help me out solving this question?
1. Calculate the energy range, in eV, of photons in visible region of the electromagnetic spectrum (wavelengths 400nm-7--nm).
(Planck constant h = 6.6 X 10^34 Js; speed of light c = 3.0 X 10^8m/s; electron charge e = -1.6 X 10^(-19) C)
1. Calculate the energy range, in eV, of photons in visible region of the electromagnetic spectrum (wavelengths 400nm-7--nm).
(Planck constant h = 6.6 X 10^34 Js; speed of light c = 3.0 X 10^8m/s; electron charge e = -1.6 X 10^(-19) C)