Calculate the energy of one photon of yellow light whose wavelength is 589 nm?

Question

When i do this on the calculator i get 5.093378608 E -4 . How is that the same as 5.09 x 10^14 s-1. I am having a hard time with what the anser is on the calculator and the answer in the book.

Then I get the final answer of 3.37 x 10^-19

Answer 1

You know that E = hf.

You also know that c = freq * wavelength.

So you can solve the second equation for freq and substitute into the first equation and get

E = hc/wavelength

E=(6.62x10^-34)(3x10^8) /
(589x10^-9)

And this will give you the energy in Joules.

Answer 2

Energy Of Yellow Light

Answer 3

E = h * c / lambda, h is Planck consistent, c is speed of sunshine, lambda is wavelength. you need to to divide the top effect with the aid of the electron fee to get it in eV as a replace of Joule.