In which of the following phenomenon, the electromagnetic radiations show particle property?
Correct answer: B. Photoelectric effect
- A. Interference
- B. Photoelectric effect
- C. Diffraction
- D. None of the above
Explanation
The phenomenon in which electromagnetic radiations, such as light, exhibit particle-like properties is the "photoelectric effect." In the photoelectric effect, light incident on a material (usually a metal) can eject electrons from the material. The energy of the ejected electrons depends on the frequency of the incident light, and this behavior is explained by treating light as particles called "photons."
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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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