Embibe Experts Solutions for Chapter: Atomic Physics, Exercise 2: Exercise-2

In a hydrogen atom, the electron is in $n^{\mathrm{th} }$ excited state. It may come down to second excited state by emitting ten different wavelengths. What is the value of $n$ ?

An electron in hydrogen atom after absorbing energy photons can jump between energy states $n_1$ and $n_2\left(n_2>n_1\right).$ Then it may return to ground state after emitting six different wavelengths in emission spectrum. The energy of emitted photons is either equal to, less than or greater than the absorbed photons. Then $n_1$ and $n_2$ are :-

The electron in a hydrogen atom makes transition from $M$ shell to $L$. The ratio of magnitudes of initial to final centripetal acceleration of the electron is :-

Monochromatic radiation of wavelength $\lambda$ is incident on a hydrogen sample containing in ground state. Hydrogen atoms absorb the light and subsequently emit radiations of ten different wavelengths. The value of $\lambda$ is

In an atom, two electrons move around the nucleus in circular orbits of radii $R$ and $4 R.$ The ratio of the time taken by them to complete one revolution is (neg.'ect electric interaction) :-

The magnitude of angular momentum, orbit radius and frequency of revolution of electron in hydrogen atom corresponding to quantum number $n$ are $L, r$ and $f$ respectively. Then according to Bohr's theory of hydrogen atom

In a Coolidge tube experiment, the minimum wavelength of the continuous $X$-ray spectrum is equal to $66.3 pm,$ then

In the characteristic $X$-ray spectra given in the figure of some atom superimposed on continuous $X$-ray spectra