Class 12 Physics simulations · Dual Nature of Radiation and Matter

Stopping potential vs frequency

Shine different frequencies on a metal and read the stopping voltage.

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What to notice

Below the threshold frequency no electrons escape, whatever the intensity.

Key relation

eV₀ = hf − φ

Try this

Change the metal and watch the threshold shift.

What you can change

• Light frequency: 4 to 15 ×10¹⁴ Hz
• Work function: 1.5 to 4.5 eV

More in Dual Nature of Radiation and Matter

• Compton scattering
• Matter-wave wavelength
• Electron diffraction from a crystal
• Photocell current vs anode voltage
• Photoelectric effect

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