A diatomic molecule is formed by two ato...

A diatomic molecule is formed by two atoms which may be treated as mass points `m_1` and `m_2` joined by a massless rod of length `r`. Then the moment of inertia of molecule about an axis passing through centre of mass and perpendicular to the rod is:

Zero

`(m_(1)+m_(2))r^(2)`

`((m_(1)m_(2))/(m_(1)+m_(2)))r^(2)`

`((m_(1)+m_(2))/(m_(1)m_(2)))r^(2)`

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