List of top Physics Questions on Nuclei asked in AIIMS

A neutron in a nuclear reactor collides head on elastically with the nucleus of a carbon atom initially at rest. The fraction of kinetic energy transferred from the neutron to the carbon atom is
Unlike electric force and gravitational forces, nuclear force has limited range. Nuclear force do not obey inverse square law.
The half-life of radium is $1600$ years. What is the fraction of sample undecayed after $6400$ years?
Two spherical nuclei have mass numbers $216$ and $64$ with their radii $R_{1}$ and $R_{2}$ respectively. The ratio, $\frac{R_{1}}{R_{2}}$ is equal to
When a slow neutron is captured by a $^{235}_{92} U$ nucleus, a fission energy releasing $200\, MeV$. If power of nuclear reactor is $100\, W$ then rate of nuclear fission is
More energy is released in fusion than fission. More number of nucleons take part in fission.
Half life of a radioactive material is $5$ years, then the percentage of it remained after $25$ years will be
A radioactive nucleus is being produced at a constant rate $\alpha$ per second. Its decay constant is $\lambda$. If $N_0$ are the number of nuclei at time t = 0, then the maximum number of nuclei possible are
Cobalt-$60$ is useful in cancer therapy Cobalt-$60$ is a source of $\gamma$-radiations capable of killing cancerous cells.
${ }_{92}^{238} U$ has $92$ protons and $238$ nucleons. It decays by emitting an alpha particle and becomes:
Carbon dating is best suited for determining the age of fossils if their age in years is of the order of
The temperature $(T )$ dependence of resistivity $(r)$ of a semiconductor is represented by
A beam of charged particles is employed in the treatment of cancer. Charged particles on passing through a material medium lose their energy by causing ionization of the atoms along their path.
Half life of a substance is $20$ minutes. What is the time between $33\%$ decay and $67\%$ decay?
Isotopes of an element can be separated by using a mass spectrometer. Separation of isotopes is possible because of the difference in electron numbers of isotopes.
Which of the following is used as a moderator in nuclear reaction?
The reaction responsible for the production of light energy from the sun is
In the nuclear reactions, there is a conservation of
A nucleus emits one $\alpha$-particle and forms a new nucleus. The mass and charge of the new nucleus is changed in one of the following way
The energy produced in the sun is due to
If a heavy nucleus is split into two medium sized parts, each of the nuclei will have more binding energy per nucleon than the original nucleus. Joining two light nuclei together to give a single nucleus of medium size means more binding energy per nucleon than the two nucleus.
The neutron was discovered by
In a boiling water reactor, the boiling water is used as a