Describe the photoelectric effect.
The photoelectric effect is a phenomenom which occurs when photons strike a metal causing electrons to be released from the metal atoms. This occurs because the photons transfer their energy to the electrons in the atom's causing them to get enough energy to escape their energy shells.
IW
Related Physics GCSE answers
All answers ▸Why does your hair stand on end when you touch a Van de Graaff generator?
An electric heater has a power of 1000W. It is connected to mains electricity (230V). The heater is equipped with an Earth wire. a) Calculate the current in the heater. b) Explain the role of the earth wire as a safety feature.
Describe the changes in forces experienced by a parachutist after they have started falling
Imagine a box sliding down a rough slope. What will the free body diagram for the box look like?