Chapter 6.3, Problem 1PPB

Practice ProblemBUILD

(a) Calculate the wavelength (in nm) of light with energy $\text{1}{\text{.89 x 10}}^{\text{-20}}\text{J}$ per photon. (b) For light of wavelength 410 nm, calculate the number of photons per joule. (c) Determine the binding energy (in eV) of a metal if the kinetic energy possessed by an ejected electron [using one of the photons in part (b)] is $\text{2}\text{.93 }\times {\text{ 10}}^{\text{-19}}\text{J}\text{.}$