In pair production .................... are produced?
Correct answer: A. Positron & electron
- A. Positron & electron
- B. Photons
- C. Electron & neutron
- D. B & C are correct
Explanation
Pair production, as implied by the name, is the production of a "position and electron" pair when a photon of high energy (gamma ray) passes by a heavy nucleus. The electron positron pair satisfies the energy, momentum and charge distribution possessed by the photon.
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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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