## electron volts conversion

$c=\lambda v$

Kelly Zhang 1L
Posts: 31
Joined: Fri Sep 28, 2018 12:18 am

### electron volts conversion

Do we have to know what constant (1.602x10^-14 J/ 1eV) to multiple the given work function (in electron volts) by on tests and quizzes? And why is the value for the constant 1.602x10^-14? Thank you!

LuisG14A1J
Posts: 9
Joined: Fri Sep 28, 2018 12:17 am

### Re: electron volts conversion

According to the textbook in the Appendix section, page A4. The electron volt, eV, is the SI equivalent of 1.602 177 x 10^-19 J. The derivation for this particular result is probably from some experiment with the photoelectric effect?
As for whether we have to remember this value or not, I am unsure. But chances are maybe it would be advantageous to know it to make calculations quicker for the test potentially.