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

The frequency of $K_{\mathrm{a}}$ line of a source of atomic number $z$ is proportional to

The energy of the electron in an excited state of a hydrogen atom is $-3.4 \mathrm{eV}$. (Given $R_{\mathrm{H}}=1.1\times {10}^7{ \mathrm{m}}^{-1}$). Then the angular momentum of the electron is

In the Rutherford scattering, the number of scattered alpha particles per unit area striking a fluorescent screen at a given distance from a thin foil at an angle $\mathrm{\theta }$ varies with kinetic energy $E$ of the alpha particle as

The spectral line corresponding to a transition of an electron in $H-$atom the first excited state to the ground state would appear in the