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 ▸If a stationary observer sees a ship moving relativistically (near the speed of light), will it appear contracted or enlarged? And by how much.
Explain how resonance occurs for a driven oscillating system and describe the effect of damping on the resonant frequency.
A car moves from rest and accelerates uniformly at 4m/s/s, how far will it have traveled after 10 seconds?
State Ohm's Law and the main characteristics of ohmic conductors, giving examples