What is the energy of a photon of light with a wavelength of 575 nm?
1 Answer
Answer:
Explanation:
The energy of a photon is proportional to its frequency, as stated by the Planck - Einstein's equation
E=h⋅ν , where
Now, notice that you are given the wavelength of the photon,
λ⋅ν=c , where
This means that the relationship between energy and wavelength looks like this
λ⋅ν=c⇒ν=cλ
E=h⋅cλ
Another important thing to notice here is that the wavelength of the photon is given in nanometers,
E=6.626⋅10−34Js⋅3⋅108ms−575⋅10−9m=3.46⋅10−19J