Which of the following physical phenomena connot be described only by the wave theory of the electromagnetic radiation?
Correct answer: C. Photoelectric effect
- A. Diffractions
- B. Interference
- C. Photoelectric effect
- D. Polarization
Explanation
The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material.
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About Dawn of Modern Physics
Classical physics cannot explain blackbody radiation and related observations, leading to Planck’s quantum theory, in which energy is emitted or absorbed in discrete packets. Photons provide the particle model of light, with energy and momentum linked to frequency and wavelength, including the photoelectric effect and its threshold frequency.
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