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  1. A 20491 cm─1 laser line was used to excite oxygen molecules (made of 16O only) to obtain the rotational Raman spectrum. The resulting rotational Raman spectrum of oxygen molecule has the first Stokes line at 20479 cm─1. 
    The next rotational Stokes line is expected at
    2. A.
    20467 cm─1
    B.
    20469 cm─1
    C.
    20471 cm─1
    D.
    20475 cm─1

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    Answer : Option B

    Explanation :

    -NA-

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