In terms of the photoelectric effect, what is the work function of a material?
It is the work done (or energy) required to remove an electron from its surface. This information is used a lot in Einstein's Nobel prize winning Photoelectric effect experiment and theory.
Related Physics A Level answers
All answers ▸A cyclist rides 10km. In the first 5km, they climb a hill, averaging 10km/h. In the second 5km, they descend the hill, averaging 30km/h. What is their average speed over the full 10km?
Explain how a stationary wave is produced when a string fixed at both ends is plucked
What does the photoelectric effect demonstrate?
What do I need to do for full marks on the question "describe an everyday circumstance where resonance occurs (4 marks)"?