Q. The figure indicates the energy level diagram of an atom and the origin of six spectral lines in emission (e.g. line no. 5 arises from the transition from level B to A). Which of the following spectral lines will occur in the absorption spectrum?Physics Question Image

 3754  170 AIPMTAIPMT 1995Atoms Report Error

Solution:

The spectral lines 4, 5 and 6 will not occur in the absorption spectrum. They are for the transitions from the higher excited state to lower excited state but not to ground state. The transitions from the excited state to ground state will occur in the absorption spectrum.