Predicting spectroscopic transition positions

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The harmonic oscillator is a model for the vibrating diatomic molecule. The energy expression for this model is given by:

Ev = (v+1/2) hν v = 0, 1, 2, 3,… (ν = oscillator frequency)

Use this expression to predict the wavenumber (cm-1) position of the infrared absorption due to the fundamental vibration (v = 0 --> v = 1) and the second overtone (v = 0 --> v = 3), for an harmonic oscillator of frequency ν = 8.00 x 1013 s, which is typical for a diatomic molecule.


If anyone can guide me as to what the question is asking for, how to setup the question and solve it I will really appreciate it.
 
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I think this question has to do with gaps between energy level.
 
can someone please help and give me clues.
 

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