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Dual Nature of Radiation and Matter
Particle Nature of Light
1 question from 1 paper, each with its answer.
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Concepts tested
- Photoelectric effect shows photons
All Questions
2001 AIPMT 1 question
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Which one among these shows particle nature of light.Interference, diffraction and polarisation can be explained only by the wave nature of light. Refraction can be explained by the wave theory too.
The photoelectric effect (instant emission, threshold frequency, and kinetic energy depending on frequency but not intensity) cannot be explained by waves.
Einstein explained it by treating light as made of particles (photons) of energy $h\nu$.
So the photoelectric effect shows the particle nature of light.