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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.
सूत्र
The calculator applies KE_max = hf - φ
चरण-दर-चरण मार्गदर्शिका
- 1Enter photon frequency and material's work function
- 2The calculator applies KE_max = hf - φ
- 3Results show maximum electron kinetic energy
हल किए गए उदाहरण
इनपुट
f = 6 × 10¹⁴ Hz, φ = 2 eV
परिणाम
KE_max = 2.48 - 2 = 0.48 eV
Using h = 4.136 × 10⁻¹⁵ eV·s
सामान्य गलतियां जिनसे बचना है
- ✕Confusing frequency with wavelength in calculations
- ✕Thinking intensity affects electron kinetic energy
अक्सर पूछे जाने वाले प्रश्न
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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