Let $m_p$ be the mass of a proton,$m_n$ the mass of a neutron,$M_1$ the mass of a ${}_{10}^{20}Ne$ nucleus,and $M_2$ the mass of a ${}_{20}^{40}Ca$ nucleus. Then:

One atomic mass unit is equivalent to .............. $MeV$ energy.

Draw the nature of the graph of average binding energy per nucleon against atomic mass number and explain its notable points.

What is nuclear energy? Explain how nuclear energy is released from the curve of binding energy.

The mass and energy equivalent to $1\, a.m.u.$ are respectively:

$A$ heavy nucleus having mass number $200$ gets disintegrated into two small fragments of mass numbers $80$ and $120$. If binding energy per nucleon for the parent atom is $6.5 \text{ MeV}$ and for the daughter nuclei is $7 \text{ MeV}$ and $8 \text{ MeV}$ respectively, then the energy released in the decay will be: (in $\text{ MeV}$)