Which of the following quantities does not remain conserved during pair production?
Answer: Mass
Explanation
In pair production, a high-energy photon converts into a particle-antiparticle pair (e.g., electron + positron).The following quantities are conserved:
- Energy
- Momentum
- Charge
However, mass is not conserved in the classical sense.
Instead, mass is converted into energy (or vice versa), following Einstein’s equation: E=mc^2
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