Embibe Experts Solutions for Chapter: Nuclear Physics, Exercise 1: Assam CEE 2016

The binding energy per nucleon of ${{}_8\mathrm{C}}^{12}=12.0038 \mathrm{amu}$, mass of neutron $=1.00898 \mathrm{amu}$ and mass of proton $=1.007599 \mathrm{amu}$ is

$X$-rays are incident on a target metal atom having $30$ neutrons. The ratio of the atomic radius of the target atom and ${}_2{}^4\mathrm{He}$ is ${14}^{\left(\frac{1}{3}\right)}$. The atomic number of the target atom is

The ratio of the binding energies of three nuclei is $1:4:9$. If the ratio of their nuclear radii is $1:2:3$, the nuclei in the decreasing order of the stability can be arranged as

The missing one $\left(?\right)$ in the following reaction is ${}^{9}Be+{}^{4}He\to 3^{4}He+?$

Consider the nuclei of ${}^{27}\mathrm{Al}$ and ${}^{64}\mathrm{Cu}$. Which of the following statements is correct?

The half-life $T_{\frac{1}{2}}$ of a radioactive substance is $5$ hours. The time after which $6.25\%$ of the substance is left without getting decayed is

If ${}_{92}{\mathrm{U}}^{238}$ changes to ${{}_{85}\mathrm{At}}^{210}$ by a series of $\mathrm{\alpha }$- and $\mathrm{\beta }$-decays, the number of $\mathrm{\alpha }$- and $\mathrm{\beta }$-decays undergone, respectively, is