Spectra corresponding to the sodium vapor lamp is:
Correct answer: B. Line spectra
- A. Band spectra
- B. Line spectra
- C. Emission spectra
- D. Absorption spectra
Explanation
Line spectra consist of discrete and distinct lines of colours or wavelengths. Each line corresponds to a specific energy transition in an atom or molecule. Sodium vapour lamps produce line spectra, where the emitted light consists of a few sharp, bright lines. These lines are a result of electronic transitions in sodium atoms when they absorb and emit photons of specific energies.
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About Atomic Spectra
Atoms emit or absorb light at specific wavelengths because electrons occupy quantized energy levels and change levels by absorbing or releasing photons. The topic covers emission and absorption spectra, spectral series, hydrogen’s line spectrum, energy-level transitions, and the relation between wavelength, frequency and photon energy.
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