Q140 / 200 · NEET 2007 · Physics

In a radioactive decay process, the negatively charged emitted $\beta$-particles are:

  • Correct answer
    A
    the electrons produced as a result of the decay of neutrons inside the nucleus
  • B
    the electrons produced as a result of collisions between atoms.
  • C
    the electrons orbiting around the nucleus
  • D
    the electrons present inside the nucleus.

Solution

In $\beta^{-}$-decay a neutron is transformed into a proton and an electron is emitted with the nucleus along with an antineutrino. $n \rightarrow p+\bar{e}+\bar{v}$ where $\bar{v}=$ antinutrino

Hence, the correct answer is option: 'A'.

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