Discussion
A rigid body, whose two of the principal moments of inertia are equal and the third is zero, is called as :
Answer: B
Such a body is called a rotor.
When two principal moments are equal and the third is zero (\(I_{A} = 0\), \(I_{B} = I_{C}\)), all the mass lies on one axis, as in a diatomic or linear polyatomic molecule such as HCl or CO\(_{2}\). This is the rigid rotor of rotational spectroscopy, with energy levels \(E_{J} = \frac{\hbar^{2}}{2I}J(J + 1)\).
A symmetric top has two equal moments and a third that is non-zero (\(NH_{3}\)), a spherical top has all three equal (\(CH_{4}\)), and an asymmetric top has all three different (\(H_{2}O\)).
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development