Find the wavelength in nm of a 775 eV photonSolutionHere en

Find the wavelength (in nm) of a 7.75 eV photon

Here ,

energy of photon = 7.75 eV

let the wavelength of photon is lamda

as energy of photon = h * c/wavelength

7.75 * 1.602 *10^-19 = 6.626 *10^-34 * 3 *10^8/lamda

lamda = 1.602 *10^-7 m = 160.2 nm

the wavelength of photon is 160.2 nm