Physics A-Level
No emission below threshold at any intensity
What No emission below threshold at any intensity means in Physics A-Level, as defined for OCR.
Definition of No emission below threshold at any intensity
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Reference: OCR
Radiation below f₀ cannot release electrons no matter how intense it is, because each photon then carries less than φ.
Topics that use No emission below threshold at any intensity
- The photoelectric effect (OCR A-Level)
Related terms
- Conservation of energy in photon absorption
- Independence of KEmax from intensity
- Intensity
- Intensity as photons per second
- Maximum kinetic energy
- One-to-one interaction
- Photoelectric current
- Photoelectric emission
Using No emission below threshold at any intensity in the exam
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