Electrons emitted from a metal when light of a certain frequency is shone on the metal are found to have a maximum energy of 8.0 x...

      

Electrons emitted from a metal when light of a certain frequency is shone on the metal are
found to have a maximum energy of 8.0 x 10-19J. If the work function of the metal is 3.2 x 10-19J,
determine the wavelength of the light used.

  

Answers


Davis
HF = hfo + ½ mv^2
= (3.2 + 82 ) x 10^-19 = 11.2 x 10^-19
wavelength= c = (3.0 x 10^8 x 6.63 x 10^-34)/11.2 x 10^-9
=1.76 x 10m
f = 11.2 x 10-^19
=6.63 x 10^-19
Githiari answered the question on September 19, 2017 at 11:57


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