Pair production occurs only when energy of photon is at least equal to:
Correct answer: B. 1.02 MeV
- A. 1.02 keV
- B. 1.02 MeV
- C. 1.02 eV
- D. 1.02 GeV
Explanation
Pair production occurs when the energy of the photon is at least 1.02 MeV. This process is an essential phenomenon in particle physics, where a high-energy photon creates an electron-positron pair in the presence of a nucleus or an electron.
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About Photons and the Particle Model of Light
The particle model treats light as photons with energy E equals hf and momentum related to wavelength. Questions involve the photoelectric effect, work function, threshold frequency, stopping potential and photon energy, while distinguishing particle behaviour from the wave description of interference and diffraction.
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