The postulate of Bohr theory that electrons jump from one orbit to the other,rather than flow,is according to:

When an electron moves from $L$-shell to $M$-shell,then it will be accompanied by :

Which of the following equations represents the velocity $(v)$ of the ejected electrons when a metal is struck with light of frequency $\nu$ and the threshold frequency of the metal is $\nu_0$? ($m_e =$ mass of electron and $h$ is Planck's constant).

If the electron jumps from $7.00 \ eV$ energy level to $5.0 \ eV$ energy level,it :

In which transition is minimum energy emitted?

The wave number of the first Lyman transition in $H$ atom spectrum is equal to the wave number of the second Balmer transition in the spectrum of