Jinsi ya kukokotoa Photoelectric
Photoelectric ni nini?
Photoelectric effect is the emission of electrons when light hits a material. It demonstrates light's particle nature and is used in photodiodes and image sensors.
Fomula
The calculator applies KE_max = hf - φ
Mwongozo wa Hatua kwa Hatua
- 1Enter photon frequency and material's work function
- 2The calculator applies KE_max = hf - φ
- 3Results show maximum electron kinetic energy
Mifano Iliyotatuliwa
Ingizo
f = 6 × 10¹⁴ Hz, φ = 2 eV
Matokeo
KE_max = 2.48 - 2 = 0.48 eV
Using h = 4.136 × 10⁻¹⁵ eV·s
Makosa ya Kawaida ya Kuepuka
- ✕Confusing frequency with wavelength in calculations
- ✕Thinking intensity affects electron kinetic energy
Maswali yanayoulizwa mara kwa mara
Why doesn't classical physics explain photoelectric effect?
Classical theory predicts increasing light intensity increases electron kinetic energy, but it doesn't—frequency alone matters.
What's threshold frequency?
Minimum frequency for electron emission: f_threshold = φ/h; below this, no emission regardless of intensity.
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