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Atoms — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsAtoms1 Mark
MCQ
What causes spectral lines?
  • A
    The transition of electrons between two energy levels.
  • B
    The transition of electrons between two wavelength ranges.
  • C
    Magnetic and electric field exiting in an atom.
  • D
    The transition of electrons from electric to magnetic field.
✓

Answer

  1. The transition of electrons between two energy levels.

Explanation:

The observed spectral lines are caused by the transition of electrons between two energy levels in an atom.

The emission spectrum of the hydrogen atom is divided into many spectral series, with wavelengths that are given by Rydberg’s formula.

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