Embibe Experts Solutions for Chapter: Atomic Physics, Exercise 1: Exercise 1

A singly ionised helium atom in an excited state $(n=4)$ emits a photon of energy $2.6 \mathrm{eV}$. Given that the ground state energy of hydrogen atom is $-13.6 \mathrm{eV}$, the energy $\left(E_{\mathrm{t}}\right)$ and quantum number $\left(n\right)$ of the resulting state are, respectively,

The ionization potential of hydrogenic ions $P$ and $Q$ are $V_{\mathrm{P}}$ and $V_{\mathrm{Q}}$ respectively. If $V_{\mathrm{Q}}<V_{\mathrm{P}}$ then radii

The Hitomi satellite recently observed the Lyman alpha emission line $(n=2 \text{to} n=1)$ of Hydrogen-like iron ion (atomic number of iron is $26$) from the Perseus galaxy cluster. The wavelength of the line is closest to,

The penetrating power of $X$-rays can be increased by 

$X$-rays are electromagnetic radiation whose wavelengths are of the order of _____.

A beam of $30\mathrm{keV}$ electrons strikes different targets in different experiments. The lowest wavelength cut-off of the continuous spectrum of $X-$rays generated by beam for any target is

An electron bean is acceleration by a potential difference $V$ to hit a metallic target to produce $X-$rays. It produces continuous as well as characteristic $X-$rays. If ${\mathrm{\lambda }}_{\min }$ is the smallest possible wavelength of ${\lambda }_{\min }$ ray in the spectrum, the variation of $\log {\lambda }_{\min }$ with $\log V$is correctly represented in

On operating an $X$-ray tube at $1 \mathrm{kV}$, $X$-rays of minimum wavelength $6.22 \mathrm{Å}$ are produced. If the tube is operated at $10 \mathrm{kV},$ then the minimum wavelength of $X$-rays produced will be