How Can Energy Incident On The Surface Can Be Produced?

The photoelectric effect is the phenomenon of the emission of electrons from the metal surface when electromagnetic radiation of suitable frequency incident upon them. Energy incident on the surface can be produced in many ways. Following are some:

  • Thermionic emission: By suitable heating with sufficient thermal energy
  • Field emission: By applying a strong electric field
  • Photoelectric emission: by illuminating with the light of suitable frequency

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