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(A) The process of creating an electron-positron pair by a photon is called $pair \ production$. During this process,the energy of the photon is conve

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$1.60$

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(A) The process of creating an electron-positron pair by a photon is called $pair \ production$. During this process,the energy of the photon is converted into the rest mass energy of the electron-positron pair and their respective kinetic energies.The energy of the photon $(E)$ is given by:$E = (m_e c^2 + K_e) + (m_p c^2 + K_p)$Where $m_e c^2 = m_p c^2 = 0.51 \ MeV$ is the rest mass energy of an electron/positron,and $K_e = K_p = 0.29 \ MeV$ is the kinetic energy of each particle.$E = (0.51 \ MeV + 0.29 \ MeV) + (0.51 \ MeV + 0.29 \ MeV)$$E = 0.80 \ MeV + 0.80 \ MeV = 1.60 \ MeV$.

$A$ photon creates an electron-positron pair with equal kinetic energy. If the kinetic energy of each particle is $0.29 \ MeV$,the energy of the photon must be .......... $MeV$.

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