Davison Germer experiment indicates__________________?
Correct answer: C. Electron diffraction
- A. Interference
- B. Polarization
- C. Electron diffraction
- D. Refraction
Explanation
The Davisson-Germer experiment produced diffraction of electrons by a nickel crystal, confirming that moving particles can have wave properties. Diffraction is not refraction, polarization, or ordinary interference in this experiment. Students may choose a because diffraction patterns arise through interference, but the specific phenomenon demonstrated was electron diffraction.
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Quantum theory treats electromagnetic radiation as packets of energy called photons, with energy proportional to frequency through E equals hf. The topic covers Planck's hypothesis, photon momentum, the photoelectric effect, threshold frequency, work function and wave particle duality, distinguishing quantised energy exchange from classical continuous radiation.
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