Pair Production Can Occur If

question 87

Multiple Choice

Pair production can occur if:

• A)the energy of two photons is greater than the combined mass-energy of a particle-antiparticlepair.
• B)only virtual particles are produced.
• C)photons are at the event horizon of a black hole.
• D)one particle is struck by a sufficiently high energy photon that a pair of electrons is formed.
• E)the particle and antiparticle have opposite spins.

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