Physics - Modern Physics Question with Solution | TestHub

Paragraph: The key feature of Bohr's theory of spectrum of hydrogen atom is the quantization of angular momentum when an electron 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: It is found that the excitation frequency from ground to the first excited state of rotation for the $\mathrm{CO}$ molecule is close to $\frac{4}{\pi }\times 10^{11}\mathrm{Hz}$. Then the moment of inertia of CO molecule about its centre of mass is close to (Take $h=2\pi \times 10^{-34}J-s$ )