Instructions

The key feature of Bohr's theory of spectrumof hydrogen atomis the quantization of angular momentum whenanelectron is revolving around a proton. We will extend this to a general rotational motion to find quantized rotational energy of a diatomic molecule assuming it to be rigid. The rule to be applied is Bohr's quantization condition.

Question 54

It is found that the excitation frequency from ground to thefirst excited state of rotation for the CO molecule is close to $$\frac{4}{\pi} \times 10^{11}$$ Hz. Then the moment of inertia of
CO molecule about its center of massis close to (Take $$h = 2 \pi \times 10^{-34}$$ J s)

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JEE (Advanced) 2010 Paper-2

It is found that the excitation frequency from ground to thefirst excited state of rotation for the CO molecule is close to $$\frac{4}{\pi} \times 10^{11}$$ Hz. Then the moment of inertia ofCO molecule about its center of massis close to (Take $$h = 2 \pi \times 10^{-34}$$ J s)

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It is found that the excitation frequency from ground to thefirst excited state of rotation for the CO molecule is close to $$\frac{4}{\pi} \times 10^{11}$$ Hz. Then the moment of inertia of
CO molecule about its center of massis close to (Take $$h = 2 \pi \times 10^{-34}$$ J s)