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How to calculate threshold frequency of a metal 
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#1
Oct3111, 06:20 AM

P: 12

1. The problem statement, all variables and given/known data
Determine the threshold frequency of a metal with a work function of 7V 2. Relevant equations Threshold frequency 'f'=W/h where w=work function, h=planck's constant 3. The attempt at a solution This is such an easy question, but I am hung up on how to treat a work function that is expressed in volts seeming as the equation used to calculate the frequency requires it to be in joules I believe. I understand that volts can be expressed as joules per coulomb, but what would I do about the coulombs then? 


#2
Oct3111, 09:37 AM

HW Helper
Thanks
P: 5,472

With one photon liberating one electron, you should convert from Joules per coulomb, to Joules per electron.



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