1. Tardigrade
  2. Question
  3. Physics
  4. A gas of identical hydrogen like atoms has some atoms in the lowest (ground) energy level A some atoms in a particular upper (excited) energy level B there are no atoms in any other energy level. The atoms of the gas make transition to a higher energy level by the absorbing monochromatic light of photon energy 2.55 eV. Subsequently, the atoms emit radiation of only six different photon energies. Some of the emitted photons have energy 2.55 eV. Some have energy more some have less than 2.55 eV. Find the principal quantum number of the initially excited level B.

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Q. A gas of identical hydrogen like atoms has some atoms in the lowest (ground) energy level $A$ & some atoms in a particular upper (excited) energy level $B$ & there are no atoms in any other energy level. The atoms of the gas make transition to a higher energy level by the absorbing monochromatic light of photon energy $2.55\, eV$. Subsequently, the atoms emit radiation of only six different photon energies. Some of the emitted photons have energy $2.55\, eV$. Some have energy more some have less than $2.55 \, eV$. Find the principal quantum number of the initially excited level $B$.

Atoms

Solution:

Correct answer is '2.00'