When to Use

[Baza AlAbdullah 2F]

Is this equation what we would use to calculate the energy of a photon? If not, when do we use this equation?

Thank you!

[leelababakhyi2F]

let's say you're gives j/s and wavelength, from that you can use the wavelength to find the j/photon (energy) and then even convert it to moles of photons if you're asked to. other than that, you can use this equation to find frequency or wavelength.