Nuclear Reactions: Fusion and Fission

The explosion of atom bomb is based on the principle of

The average energy released per fission is

The mass defect in a nuclear fusion reaction is $0.3\%$. What amount of energy is produced when $1 \mathrm{kg}$ of substance undergoes fusion.

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

Determine the energy released in the process: ${}_1\mathrm{H}^2+{}_1\mathrm{H}^2\stackrel{}{\to }{}_2\mathrm{He}^4+\mathrm{Q}$.
Given $\left[\mathrm{M}\left({}_1{}^{}\mathrm{H}_{}^2\right)=2.01471 \mathrm{amu} \text{and} \mathrm{M}\left({}_2\mathrm{He}^4\right)=4.00388 \mathrm{amu}\right]$

The energy released per fission of Uranium is $200\mathrm{MeV}$. Determine the number of fission per second required to generate $2\mathrm{MW}$ power.

In the nuclear fusion reaction  ${}_1{}^2\mathrm{H}+{}_1{}^3\mathrm{H}\stackrel{}{\to }{}_2{}^4\mathrm{He}+\mathrm{n}$. It is given that the repulsive potential energy between the two nuclei is $~7.7\times {10}^{-14} \mathrm{J}$, the temperature at which the gases must be heated to initiate the reaction is nearly $[$Boltzmann's constant $\left.\mathrm{k}=1.38\times {10}^{-23} \mathrm{J} {\mathrm{K}}^{-1}\right]$

In a fission reaction, ${\mathrm{U}}_{92}^{236}\stackrel{}{\to }{\mathrm{X}}^{117}+{\mathrm{Y}}^{117}+\mathrm{n}+\mathrm{n}$, the binding energy per nucleon of $\mathrm{X} \text{and} \mathrm{Y}$ is $8.5 \mathrm{MeV}$ each, whereas that of ${\mathrm{U}}^{236}$ is $7.6 \mathrm{MeV}$. The total energy liberated will be about:

In the nuclear fission piece of uranium of mass $5.0 \mathrm{g}$ is lost, the energy obtained in $\mathrm{kWh}$ is

The mass defect in a particular nuclear reaction is $0.3 \mathrm{g}$. The amount of energy liberated in $\mathrm{kWh}$ is $($Take velocity of light equal to $3\times {10}^8 \mathrm{m} {\mathrm{s}}^{-1})$

Fusion reactions take place at high temperature because

Nuclear energy is released in fission, since, binding energy per nucleon is

Thermal neutrons are those which

A moderator is used in nuclear reactors in order to :