In Bohr model of hydrogen atom, the force on the electron depends on the principal quantum number as
$F \propto 1/{n^3}$
$F \propto 1/{n^4}$
$F \propto 1/{n^5}$
Does not depend on $n$
If radiation of allow wavelengths from ultraviolet to infrared is passed through hydrogen agas at room temperature, absorption lines will be observed in the :
For principal quantum number $n = 3$, the possible values of orbital quantum number $‘l’$ are
In the following diagram, which particle has highest $e/m$ value?
In an atom, two electrons move around the nucleus in circular orbits of radii $R$ and $4R.$ The ratio of the time taken by them to complete one revolution is : (neglect electric interaction)
The figure represents the observed intensity of $X-$rays emitted by an $X-$ray tube, as a function of wavelength. The sharp peaks $A$ and $B$ denote