11.4 Photoelectric Effect Simulation

Photoelectric Effect Simulation

Photoelectric Effect Simulation

Experimental study of electron emission from a photosensitive surface

Experimental Setup

5.0 V
50%

Light Properties

500 THz
2.5 eV

Photoelectric Effect

When light of sufficient frequency (energy) strikes a metal surface (photosensitive plate), electrons are emitted. Key observations:

  • Photocurrent increases with light intensity (more photons → more electrons)
  • Electron energy depends on light frequency, not intensity (E = hν - Φ)
  • Below a threshold frequency (ν₀ = Φ/h), no electrons are emitted regardless of intensity

K.E. of emitted electrons: E = hν - Φ

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