Homework:
- Activity 11A, p.188-189 Waves & Photons
- Activity 11B, p.192 Photoelectric Effect
- Exercise 5B, p.205-208 Photoelectric Effect
- Ex 5C, p.212-215 Photoelectric Effect
Photoelectric Effect
Photoelectric Effect A-Level Physics
Hertz and Lenards Observation of Photoelectric Effect
Photoelectric Effect A-Level Physics
Hertz and Lenards Observation of Photoelectric Effect
Photoelectric Effect
The concept of the Photoelectric Effect was introduced and how light modeled as a particle can explain this, while light modeled as a wave cannot.
The above video explains the Photoelectric Effect using a PhET application which I encourage you to use and experiment with.This can be found at:
Planck's Constant h = 6.63 x 10-34 Js
Energy of a Photon E = hf
Threshold Frequency fo , the frequency of incident photons that have an energy equal to the work function of the metal
Work Function φ = energy required to free an electron from a specific metal (J)
Maximum Kinetic Energy, Ek, of a freed electron by an incident photon:Ek = hf - φ
Electron Volts to Joules Conversion
The concept of the Photoelectric Effect was introduced and how light modeled as a particle can explain this, while light modeled as a wave cannot.
The above video explains the Photoelectric Effect using a PhET application which I encourage you to use and experiment with.
This can be found at:
Planck's Constant h = 6.63 x 10-34 Js
Energy of a Photon E = hf
Threshold Frequency fo , the frequency of incident photons that have an energy equal to the work function of the metal
Work Function φ = energy required to free an electron from a specific metal (J)
Maximum Kinetic Energy, Ek, of a freed electron by an incident photon:
Ek = hf - φ
Electron Volts to Joules Conversion
