In order to produce an electron and a positron, two photons must have a combined energy of: A) E $\gt$ 2m_ec² B) E $\gt$ m_ec² C) E $\gt$ 1/2m_ec² D) E = m_ec² E) This cannot happen.

Question

Quizplus · Accepted Answer

The combined energy of the two photons must be greater than or equal to 2m_ec² to create an electron-positron pair, as this is the rest mass energy of the two particles.

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