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Which of the following situations is INCONSISTENT with charge conservation?
AA photon spontaneously becomes a +e charged particle alone
BA pair of opposite charges is created together from a gamma-ray photon
CA neutron decays into a proton and an electron
DTwo oppositely charged spheres are brought into contact and net charge becomes zero
Answer & Solution
Correct answer: A. A photon spontaneously becomes a +e charged particle alone
A single +e particle appearing out of a neutral photon would violate conservation of charge. The other three either preserve net charge (β-decay sum is 0; opposite charges cancelling; pair-production yields net zero charge).
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