How do you calculate the energy of one photon of blue-green light with a wavelength of 493.0 nm.?
E = hf (where E = energy and h = Planck’s constant of 6.63 x 10^-34 J/Hz)
f = c/wavelength where c = speed of light at 3.0 x 10^8 m/s
Hopefully you can take it from there.
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