Mechanism of Nuclear Fission

Q. Which of the following is a wrong description of binding energy of a nucleus?

1. It is the energy required to break a nucleus into its constituent nucleons.
2. It is the energy made available when free nucleons combine to form a nucleus.
3. It is the sum of the rest mass energies of its nucleons minus the rest mass energy of the nucleus.
4. It is the sum of the Kinetic energy of all the nucleons in the nucleus. Z

Q. The binding energy per nucleon of deuteron ${(}_1^{2}H)$ and helium nucleus ${(}_2^{4}He)$ is 1.1 MeV and 7 MeV respectively. If two deuteron nuclei react to form a single helium nucleus, then the energy released is

1. 13.9 MeV
2. 26.9 MeV
3. 23.6 MeV
4. 19.2 MeV

Q. The following figure represents the liquid drop model of nuclear fission. The energies of these states are $E_1$, $E_2$ and $E_3$respectively. Which option is correct?

1. $E_1$>$E_2$>$E_3$
2. $E_1$>$E_2$<$E_3$
3. $E_1$<$E_2$>$E_3$
4. $E_1$<$E_2$<$E_3$

Q. The binding energy per nucleon of deuteron ${(}_1^{2}H)$ and helium nucleus ${(}_2^{4}He)$ is 1.1 MeV and 7 MeV respectively. If two deuteron nuclei react to form a single helium nucleus, then the energy released is

1. 13.9 MeV
2. 26.9 MeV
3. 23.6 MeV
4. 19.2 MeV

Q. Statement I: Nuclear fission is not a spontaneous process as the energy is required to be supplied to it to reach the intermediate state before breaking up into two fragments.
Statement II: The energy of the intermediate state is higher than the initial energy of the parent nucleus.

1. Both the statements are correct and statement II infers to statement I
2. Both the statements are correct but statement II doesn’t infer to statement I
3. Statement I is correct but statement II is incorrect
4. Statement II is correct but statement I is incorrect