Bohr Model Questions

A model for quantized motion of an electron in a uniform magnetic field $B$ states that the flux passing through the orbit of the electron is $n(h/e)$ where $n$ is an integer, $h$ is Planck's constant and $e$ is the magnitude of electron's charge. According to the model, the magnetic moment of an electron in its lowest energy state will be ($m$ is the mass of the electron):

A particle of mass $m$ is moving around the origin with a constant force $F$ pulling it towards the origin. If Bohr model is used to describe its motion, the radius $r$ of the $n^{th}$ orbit and the particle's speed $v$ in the orbit depend on $n$ as:

De-Broglie wavelength of an electron orbiting in the $n=2$ state of hydrogen atom is close to (Given Bohr radius $=0.052\text{nm}$):

The ratio of the wavelengths of the light absorbed by a Hydrogen atom when it undergoes $n=2\to n=3$ and $n=4\to n=6$ transitions, respectively, is:

Energy and radius of first Bohr orbit of $H{e}^{+}$ and $L{i}^{2+}$ are:[Given $R_H=2.18\times 10^{-18}\text{J},a_0=52.9\text{pm}$ ]

The energy of second Bohr orbit of the hydrogen atom is -328 kJ mol-1 ; hence the energy of fourth Bohr orbit would be :

The total energy of electron in the ground state of hydrogen atom is $-13.6\text{eV}$. The kinetic energy of an electron in the first excited state is:

The ionization energy of the electron in the hydrogen atom in its ground state is $13.6\text{eV}$. The atoms are excited to higher energy levels to emit radiations of $6$ wavelengths. Maximum wavelength of emitted radiation corresponds to the transition between:

The energy of a hydrogen atom in the ground state is $-13.6\text{ eV}$. The energy of a ${\text{He}}^{+}$ ion in the first excited state will be:

An electron in $\text{H}$ -atom jumps from $n$ to ground state. Work function of material is $2.75\text{eV}$ and stopping potential is $10\text{V}$. The value of $n$ is:

Which is not a possible energy for a photon emitted by $\text{H}$ -atom?