(Given a voltage against frequency graph)
Calculate the work function of Sodium and state any assumptions you have made.
My question is, what assumptions have I made?
hf = work function
V = IR
The Attempt at a Solution
I know on a Voltage against Frequency graph, the x intercept is the threshold frequency as it's the point where there is no kinetic energy given to the electrons to produce a current as V = IR, and so I can use
hf = work function, to calculate work function.
However I'm not sure what I'm assuming in this process, and I'm sure it's not something like 'Assuming the data is correct'