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What is the momentum of photon of energy 3 Mev in $kgms^{-1}$?

$\begin{array}{1 1} 1.6 \times 10^{-21} kg ms^{-1} \\ 1.6 \times 10^{-20} kg ms^{-1} \\ 1.6 \times 10^{-19} kg ms^{-1} \\ 1.6 \times 10^{-22} kg ms^{-1} \end{array} $

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