In any fission process the ratio $$\frac{{{\text{mass of fission products}}}}{{{\text{mass of parent nucleus}}}}$$ is
A.
less than 1
B.
greater than 1
C.
equal to 1
D.
depends on the mass of parent nucleus
Answer :
less than 1
Solution :
In fission process, when a parent nucleus breaks into daughter products, then some mass is lost in the form of energy. Thus, mass of fission products < mass of parent nucleus
$$ \Rightarrow \frac{{{\text{Mass of fission products}}}}{{{\text{Mass of parent nucleus}}}} < 1$$
Releted MCQ Question on Modern Physics >> Atoms or Nuclear Fission and Fusion
In the nuclear fusion reaction
$$_1^2H + _1^3H \to _2^4He + n$$
given that the repulsive potential energy between the two
nuclei is $$ \sim 7.7 \times {10^{ - 14}}J,$$ the temperature at which the gases must be heated to initiate the reaction is nearly
[Boltzmann’s Constant $$k = 1.38 \times {10^{ - 23}}J/K$$ ]
The binding energy per nucleon of deuteron $$\left( {_1^2H} \right)$$ and helium nucleus $$\left( {_2^4He} \right)$$ is $$1.1\,MeV$$ and $$7\,MeV$$ respectively. If two deuteron nuclei react to form a single helium nucleus, then the energy released is