The wavelength of X-ray is controlled by _.
Correct answer: C. Increasing PD of electrodes
- A. Increasing temperature
- B. Decreasing pressure
- C. Increasing PD of electrodes
- D. None of these options are correct
Explanation
The wavelength of produced X-rays depends on the energy of electrons in the X-ray tube, which depends on the potential difference between the electrodes asE=qVHence, C is the correct option.
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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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