The Photoelectric Effect and the Photon Model

What this note covers

1. Historical Context: Why Classical Physics Failed
2. Einstein's Photon Model (1905)
3. Work Function and Threshold Frequency
4. The Photoelectric Equation: KEmax = hf − φ
5. Worked Example 1: Finding KEmax and Threshold Frequency
6. Worked Example 2: Stopping Voltage and Experimental Determination of h
7. Wave–Particle Duality and the Significance of the Photon Model

7 sections · 12 key terms & formulas · 6 common mistakes