A diatomic molecule has moment of inertia I. By Bohrs quantization condition its rotational energy in the nth level (n=0 is not allowed) is
n(h28π2I)
1n2(h28π2I)
1n(h28π2I)
n2(h28π2I)
A
n(h28π2I)
B
n2(h28π2I)
C
1n(h28π2I)
D
1n2(h28π2I)
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Solution
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L=nh2π K.E.=L22I=(nh2π)212I
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