List of top Physics Questions on Bohr Model Of The Hydrogen Atom asked in CPET

The average lifetime of a hydrogen atom excited to the \(n = 2\) state is \(10^{-8}\ \text{s}\). The average number of revolutions the electron makes before it jumps to the ground state is:

Suppose the angular momentum is quantized as even integral multiples of \(h/2\pi\) in an imaginary world. According to Bohr's model, what is the longest possible wavelength that hydrogen atoms emit in the visible range in such a world?