Which source does not have an absorption spectrum?
Correct answer: B. Neon street sign
- A. Electric fibre
- B. Neon street sign
- C. Red traffic light
- D. Sun
Explanation
Neon signs emit light at specific wavelengths due to the atomic transitions in neon gas. They do not have an absorption spectrum but rather an emission spectrum
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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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