Disintegration of photon on striking a nucleus into an electron and positron is known as:
Correct answer: C. Pair production
- A. Compton effect
- B. Annihilation of matter
- C. Pair production
- D. All of the above
Explanation
The process of a photon disintegrating into an electron and a positron upon striking a nucleus is known as "pair production." In pair production, a high-energy photon interacts with the strong electric field near a nucleus, resulting in the creation of an electron-positron pair.
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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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