Which of the following is correct for the Humphrey series of the hydrogen spectrum?

Two series of spectral lines of atomic hydrogen which do not belong to the infrared spectral region are

In a mixture of $H$ and $He^{+}$ gases,all $H$ atoms and $He^{+}$ ions are excited to their first excited states. Subsequently,on de-excitation in $H$ atoms,energy is transferred to the excited $He^{+}$ ion. The quantum number $n$ of the $He^{+}$ ion after the energy is transferred is:

In the atomic spectrum of hydrogen,the series of lines observed in the visible region is:

Which of the following provisions of the Bohr atomic model of hydrogen turned out to be false?

In Bohr's model of an atom,when an electron jumps from $n = 1$ to $n = 3$,how much energy is absorbed?