Maximum frequency in the spectrum from X-ray tube is directly proportional to the______________?
Correct answer: B. The kinetic energy of the incident electron i.e. the potential difference through which they are accelerated
- A. Number of incident electron i.e. filament current
- B. The kinetic energy of the incident electron i.e. the potential difference through which they are accelerated
- C. The soft target which can easily emit electrons
- D. All of above are correct
Explanation
The maximum X-ray frequency follows h f_max = eV, so f_max = eV/h and is directly proportional to the accelerating potential difference, which determines the incident electron kinetic energy. The likely wrong choice is filament current, because it changes the number of electrons and hence intensity, not the maximum photon energy.
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The particle model treats light as photons with energy E equals hf and momentum related to wavelength. Questions involve the photoelectric effect, work function, threshold frequency, stopping potential and photon energy, while distinguishing particle behaviour from the wave description of interference and diffraction.
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