The isotope having a mass undergoes -decay to

PHYSICS · Subjective · A Level · Physics · Particles and radiation · Particles and radiation

Problem

The isotope

{}^{12}_{5}\text{B}

having a mass

12.014 \text{ u}

undergoes

\beta

-decay to

{}^{12}_{6}\text{C}

{}^{12}_{6}\text{C}

has an excited state of the nucleus

({}^{12}_{6}\text{C}^*)

4.041 \text{ MeV}

above its ground state. If

{}^{12}_{5}\text{B}

decays to

{}^{12}_{6}\text{C}^*

, the maximum kinetic energy of the

\beta

-particle in units of MeV is (

1 \text{ u} = 931.5 \text{ MeV}/c^2

, where

c

is the speed of light in vacuum). [Adv. 2016]