Threshold Frequency and Threshold Wavelength
 

Threshold Frequency and Threshold Wavelength problem 1


The energy of photons of light that shines on the surface of a gold piece is 9.2 eV. We measure the kinetic energy of the electrons coming from the illuminated surface to be 4.1 eV.

  • What is the work function of this gold piece?

  • What is the threshold wavelength at which we can still observe ejected electrons?


Note that:



 

material editor: Sunday Awolaja