Final answer:
The wavelength of the emitted or absorbed photon depends on the energy difference between the initial and final states of the transition.
Step-by-step explanation:
The wavelength of the emitted or absorbed photon can be determined by the energy difference between the initial and final states of the transition.
When an electron moves from a higher energy state to a lower energy state, a photon is emitted.
The wavelength of this emitted photon will be longer than the wavelength of the photon involved in transition c if the energy difference between the two states is smaller.
Conversely, if the energy difference is larger, the emitted photon will have a shorter wavelength than the photon involved in transition c.