Wave-like characteristic of electron is demonstrated by______________?
Correct answer: C. Diffraction by crystalline solids
- A. Line spectrum of atoms
- B. Production of x-rays.
- C. Diffraction by crystalline solids
- D. Photoelectric effect
Explanation
Electron wave behaviour is demonstrated by electron diffraction from crystalline solids, where the regularly spaced atomic planes act like a diffraction structure. The likely wrong choice is photoelectric effect, which demonstrates the particle nature of light rather than the wave nature of electrons.
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About Quantum Theory and Radiation
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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