A free neutron decays spontaneously into :

A free neutron decays spontaneously into :
  1. a proton, an electron and anti-neutrino
  2. a proton, an electron and a-neutrino
  3. a proton and electron
  4. a proton, and electron, a neutrino and an anti-neutrino.

Solution

$n \rightarrow p+e^{-}+\bar{v}$ (anti-neutrino)

Asked in: AP EAMCET 2006

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