Ejercicio efecto foto eléctrico 2021/2

(a) What is the wavelength of an X-ray photon of energy 10.0keV? 

(b) What is the wavelength of a gamma-ray photon of energy 1.00 MeV? 

(c) What is the range of energies of photons of visible light with wavelengths 350–700 nm?

Reference : Kenneth S.- Krane pag 100 chapter 3

Solución: 

(Catalina Millán)

$$\lambda = \frac{hc}{E}$$

        a) $\lambda=\frac{[4.14\times 10^{-15}eV s ]\times[3\times10^8m/s]}{10keV}=0.123nm$

                  b) $\lambda=\frac{[4.14\times 10^{-15}eV s ]\times[3\times10^8m/s]}{1 MeV}=0.00123nm$

                  c) $E_1=\frac{[4.14\times 10^{-15}eV s ]\times[3\times10^8m/s]}{350nm}=3.5eV$

                      $E_2=\frac{[4.14\times 10^{-15}eV s ]\times[3\times10^8m/s]}{700nm}=1.8eV$