MDCAT Physics MCQ #320

MDCAT Physics MCQ #320

1. Question 1

   Q1. Why do molecular spectra show complex bands while atomic spectra have sharp lines?

   • A) Molecules have rotational and vibrational energy levels.
   • B) Atoms absorb more photons than molecules.
   • C) Molecules emit lower-energy photons.
   • D) Atomic transitions are more precise.

   Answer: Molecules have rotational and vibrational energy levels.

   Explanation: Molecular transitions involve multiple energy modes. Option C ignores the role of vibrational states.