UPSC Combined Geo-Scientist, Mains · 2017 · Mains Paper II
Q14(b). Moment of inertia and bond length from the J = 0→1 line
Question
The wavenumber of the J = 0 → 1 transition in the pure rotational spectrum of a diatomic molecule [given in the paper] is 16.93 cm⁻¹. Assuming the molecule to be a rigid rotor, calculate its moment of inertia in kg m² and equilibrium bond length in m.
Model answer
The free solution for 2017 answers questions 1, 2, 3, 4, 5, 8, 9, 12, 13 and 15, the ones picked in its time plan. This part is not answered on the site yet. New answers are announced on Telegram.
Part of VKC Basic
Read the key points and the full model answer with VKC Basic
VKC Basic (₹999 for 6 months) opens every solved answer, the notes, the handbook and the daily answer archive. Every Mains test series includes it.
Coversrotational spectroscopyrigid rotormoment of inertiabond length
All parts of Question 14
- 14(a) Langmuir isotherm for dissociative adsorption of O₂10 marks
- 14(b) Moment of inertia and bond length from the J = 0→1 line10 marks