List of top Physics Questions on Nuclei asked in KEAM

If a radioactive parent nucleus \({}^{236}_{94}X\) emits two alpha particles and two \(\beta\) particles successively to reach the daughter nucleus \({}^{a}_{b}Y\), then the values of \(a\) and \(b\) are

The INCORRECT statement is

Nucleons in nucleus are bound by

The expected mass of \({}^{12}_{6}C\) nucleus is (Mass of neutron is 1.00866 u; Mass of proton is 1.00727 u).

The binding energy per nucleon is maximum for the nucleus

The energy released by $2.35\,g$ of $^{235}U$ by fission in a nuclear reactor (in $MeV$) is (Average energy released per fission is $200\,MeV$):

On an average, the number of neutrons and the energy of a neutron released per fission of a uranium atom are respectively

The half-life periods of two radioactive materials A and B are 1500 years and 1200 years respectively. If their mean life periods are \( \tau_A \) and \( \tau_B \) respectively, then the value of the ratio \( \frac{\tau_A}{\tau_B} \) is

The process that releases neutrons from the nucleus is

A nucleus, initially at rest, breaks up into two nuclear fragments with their radii in the ratio \(2:1\). Then their velocities will be in the ratio

The ratio of the energy released by \(4\) kg of hydrogen at room temperature to the heat generated by \(23.5\) kg of \({}^{235}\text{U}\) in the nuclear reactor by fission process is (Assume energy released per fusion is \(26\) MeV and that per fission is \(200\) MeV)

A 2 MeV neutron is emitted in a fission reactor. If it loses half of its kinetic energy in each collision with a moderator atom, how many collisions must it undergo to achieve thermal energy of 0.039 eV?

A decay chain of the nucleus $^{238}_{92}\text{U}$ involves eight $\alpha$-decays and six $\beta$-decays. The final nucleus at the end of the process will be

For a light nuclei, which of the following relation between the atomic number (Z) and mass number (A) is valid

Which of the following particle when bombards on $^{65}\text{Cu}$ will turn into $^{66}\text{Cu}$}

During $\beta^-$ emission

If the ratio of the radius of a nucleus with 61 neutrons to that of helium nucleus is 3, the atomic number of this nucleus is

In a series of radioactive decays, if a nucleus of mass number 180 and atomic number 72 decays into another nucleus of mass number 172 and atomic number 69, then the number of alpha and beta particles released respectively are

The binding energy per nucleon for deuteron \((^2_1H)\) and helium \((^4_2He)\) are 1.1 MeV and 7.0 MeV respectively. The energy released when two deuterons fuse to form a helium nucleus is

On an average, the number of neutrons and the energy of a neutron released per fission of a uranium atom are respectively

The ratio of the surface area of the nuclei \(_{52}\text{Te}^{125}\) to that of \(_{13}\text{Al}^{27}\) is

On an average, the number of neutrons and the energy of a neutron released per fission of a uranium atom are respectively

The ratio of the surface area of the nuclei \(_{52}\text{Te}^{125}\) to that of \(_{13}\text{Al}^{27}\) is

On an average, the number of neutrons and the energy of a neutron released per fission of a uranium atom are respectively