List of top Physics Questions on Nuclei asked in AIEEE

Assume that a neutron breaks into a proton and an electron. The energy released during this process is : (Mass of neutron $= 1.6725 ??10^{-27}\, kg$, Mass of proton $= 1.6725 ??10^{-27}\, kg$, Mass of electron $= 9 ??10^{-31}\, kg$ )

The counting rate observed from a radioactive source at $t = 0$ was $1600$ counts $s^{-1}$, and $t = 8 \,s$, it was $100$ counts $s^{-1}$. The counting rate observed as counts $s^{-1}$ at $t = 6$ s will be

Ionisation energy of $Li$ (Lithium) atom in ground state is $5.4\, eV$. Binding energy of an electron in $Li^+$ ion in ground state is $75.6\, eV$. Energy required to remove all three electrons of Lithium (Li) atom is

A radioactive nucleus (initial mass number $A_o$ and atomic number Z) emits $3\, \alpha$-particles and $2\, positrons$. The ratio of number of neutrons to that of protons in the final nucleus will be

A nucleus of mass $M + \Delta m$ is at rest and decays into two daughter nuclei of equal mass $\frac{M}{2}$ each. Speed of light is $c$ The speed of daughter nuclei is

A nucleus of mass $M + \Delta m$ is at rest and decays into two daughter nuclei of equal mass $\frac{M}{2}$ each. Speed of light is c The binding energy per nucleon for the parent nucleus is $E_1$ and that for the daughter nuclei is $E_2$. Then

If $M_O$ is the mass of an oxygen isotope $_{8}O^{17}, M_{P}$ and $M_{N}$ are the masses of a proton and a neutron respectively, the nuclear binding energy of the isotope is

The energy spectrum of $\beta$-particles [number N(E) as a function of $\beta$-energy E] emitted from a radioactive source is :

If radius of the $^{27}_{13} Al$ nucleus is estimated to be $3.6$ fermi, then the radius of $^{125}_{52} Te$ nucleus be nearly:

A nuclear transformation is denoted by $X\left(n, \alpha\right) \,^{7}_{3}Li.$ Which of the following is the nucleus of element $X$ ?

When $U^{238}$ nucleus originally at rest, decays by emitting an alpha particle having a speed u, the recoil speed of the residual nucleus is