Embibe Experts Solutions for Chapter: Nuclear Physics, Exercise 1: Exercise 1

In a fast breeder atomic reactor

Masses of nucleus, neutron an protons are $\mathrm{M},{\mathrm{n}}_{\mathrm{m}}$ and ${\mathrm{m}}_{\mathrm{p}}$ respectively. If nucleus has been divided into neutrons and protons, then

A positron of $1\mathrm{MeV}$ collides with an electron of $1\mathrm{MeV}$ and gets annihilated and the reaction produces two $\gamma$-ray photons. If the effective mass of each photon is $0.0016 \mathrm{amu},$ then the energy of each $y$-ray photon is

If mass of the fissionable material is less than the critical mass, then

The value of binding energy for ${}_1\mathrm{H}^2,{}_2\mathrm{He}^4,{}_{26}\mathrm{Fe}^{56},{}_{92}\mathrm{U}^{235}$ are $2.22,28.3,492$ and $1786$ units respectively. Then most stable nucleus is-

The binding energies per nucleon of deuteron and $\alpha$-particle are $x_1$ and $x_2$ respectively. Then energy released in the following reaction will be $-{}_1\mathrm{H}^2+{}_1\mathrm{H}^2={}_2\mathrm{He}^4+\mathrm{Q}$

If the mass of proton $1.008$ is $\mathrm{a}.\mathrm{m}.\mathrm{u}$. and mass of neutron is $1.009$ $\mathrm{a}.\mathrm{m}.\mathrm{u}$. then binding energy per nucleon for ${\mathrm{Be}}^9$ ( $\mathrm{mass}=9.012$ $\mathrm{a}.\mathrm{m}.\mathrm{u}$) would be-

An electron-positron pair (rest mass of each particle is $0.51\mathrm{MeV}$ ) is produced by a $\gamma$-ray photon of energy $2.42\mathrm{MeV}$. The K.E. imparted to each of the charged particles shall be-