When a monochromatic light with a wavelength of 254 nm falls onto the surface of a particular metal it causes a photocurrent to flow. A stopping voltage of 2.30 V is required to completely block the photocurrent. What is the work function of the material?
KE = hf - Wo
hf = hc/wavelength
The Attempt at a Solution
I keep getting a negative number which is an impossible answer for a work function.
Any help would be greatly appreciated.