X-rays are electromagnetic waves having a wavelength of:
Correct answer: C. 10^−10m
- A. 10^−6m
- B. 10^−8 m
- C. 10^−10m
- D. 10^−12 m
Explanation
C is the correct option because X-rays have wavelengths in the range of 10^−8 to 10^−12 meters, typically around 10^−10 meters.
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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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