What is the Photoelectric Effect?

 In very fundamental terms, it is when electrons are released from a particular type of metal upon receiving adequate energy from incident light. 

Photoelectric effact


So basically, light comes down and strikes the metal. If the energy of the light wave is sufficient, the electron will then shoot out of the metal with some velocity and kinetic energy.

The Photoelectric Effect
"When light strikes a material, electrons are 
emitted. The radiant energy supplies the work
necessary to free the electrons from the 
surface."

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