Question: (a) Show that the energy difference between rotational levels with angular-momentum quantum numbers l and l 1 is H2/I. (b) In terms of l,

(a) Show that the energy difference between rotational levels with angular-momentum quantum numbers l and l – 1 is H2/I.
(b) In terms of l, h, and I, what is the frequency of the photon emitted in the pure rotation transition l → 1 – 1?

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