It is said that when you apply
light into an electron, a spark can be seen. This is what happens in the
photoelectric effect. Photoelectric effect is seen on solids such as metals
wherein it releases electrons when it is exposed in light. Energy in the form of light is being used by
the electron to displace itself from its fixed position. An example is when you
light a matchstick. The, head which contains phosphorus, electrons from its
fixed position moves to a more excited energy level causing it to burst into
flames.
