Answered: A nucleus emits a gamma ray of energy… | bartleby

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A nucleus emits a gamma ray of energy 1.2 MeV from a
state that has a lifetime of 2.1 ns. What is the uncertainty
in the energy of the gamma ray? The best gamma-ray
detectors can measure gamma-ray energies to a precision
of no better than a few eV. Will this uncertainty be directly
measurable?

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