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Concepts Of Physics MCQ Edition [Volume 1]PhysicsDispersion and Spectra

Examine the two statements given below: (A) Line spectra provide information regarding atoms. (B) Band spectra provide information regarding molecules.

Options

  1. ABoth (A) and (B) are correct.
  2. BStatement (A) is correct, but (B) is incorrect.
  3. CStatement (B) is correct, but (A) is incorrect.
  4. DBoth (A) and (B) are incorrect.

Correct answer

A. Both (A) and (B) are correct.

Step-by-step solution

Line spectra are characteristic of atoms. When an atom is excited, its electrons transition between discrete electronic energy levels, producing a spectrum consisting of distinct, separated lines. Thus, line spectra provide information regarding atomic structure. Band spectra are characteristic of molecules. Molecules possess vibrational and rotational energy levels in addition to electronic energy levels. Transitions between these closely spaced levels produce groups of closely spaced lines that appear as continuo

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