Physics A-Level
Threshold wavelength
What Threshold wavelength means in Physics A-Level, as defined for OCR.
Definition of Threshold wavelength
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Reference: OCR
The corresponding wavelength, given by λ₀ = c/f₀ = hc/φ.
Topics that use Threshold wavelength
- 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 Threshold wavelength in the exam
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