When high-energy photon interacts with a nucleus and disintegrates into an electron and positron, this phenomenon is known as
Correct answer: A. Pair production.
- A. Pair production.
- B. Compton's effect.
- C. Photoelectric effect.
- D. Annihilation of matter.
Explanation
The correct answer is 'Pair production.' This phenomenon occurs when a high-energy photon interacts with a nucleus and transforms into an electron and a positron. This is distinct from 'annihilation of matter,' which involves an electron and positron colliding to produce gamma rays. The Compton effect and the photoelectric effect involve different interactions of photons with matter and do not result in the creation of particle-antiparticle pairs.
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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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