Photoelectric Effect

Explore threshold frequency, stopping potential, and Einstein’s photoelectric equation.

Photon energy

3.10 eV

Max KE

0.80 eV

Stopping potential

0.80 V

Electrons emitted

Relative photocurrent: 29%

Wavelength400 nm

Work function φ2.30 eV

Intensity60%

Threshold wavelength

539.1 nm

Threshold frequency

5.56×10¹⁴ Hz

Einstein’s Equation

E = hf = φ + K_max

K_max = e V₀

f₀ = φ / h

E (eV) ≈ 1240 / λ(nm)