Nuclear Physics - Decay Processes and Atomic Structure

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Multiple Choice

A free nucleus of mass $24$ u emits a gamma photon [when initially at rest]. The energy of the photon is $7$ MeV. The recoil energy of the nucleus in keV is 

  1. $1.1$
  2. $1.2$
  3. $1.0$
  4. $1.3$
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