Light with a frequency of #2.79 * 10^15 Hz# strikes a metal surface and ejects electrons that have a maximum kinetic energy of #6.4 eV#. What is the work function of metal?
1 Answer
Jul 6, 2016
I found:
Explanation:
Here you deal with the Photoelectric Effect where Energy (in form of light) strikes a metal surface and ejects electrons from it.
But:
the maximum kinetic energy of, say, one electron emitted will be equal to the incident (photon) energy given as
So basically:
Kinetic Energy (max) is
So we get:
so:
Nickel perhaps?