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cse • paper_2 • atomic_molecularcse-2003-subject-06-002

Electronic transitions — UPSC CSE 2003 Physics PYQ

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(i) What are the typical energies (eV) of the radiations, required to excite (i) electronic transitions. (ii) vibrational transitions and (iii) rotational transitions in a molecule ? (ii) The rotational spectrum of HI consists of equidistant lines with a separation of 12.8\text{ cm}^{-1}. Calculate the (a) M.I. and (b) bond length of HI molecule.

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