In the case when the electrons lose all their kinetic energy (K.E.) in the first collision, the X-ray photon emitted has the following set of frequency and wavelength?

Correct answer: A. fmax , λmin

  • A. fmax , λmin
  • B. fmax , λmax
  • C. fmin , λmax
  • D. fmin , λmin

Explanation

fmax , λmin : This option suggests that when electrons lose all their kinetic energy in the first collision, the emitted X-ray photon will have maximum frequency ( fmax ) and minimum wavelength ( λmin ). According to the relationship between frequency and wavelength (c = λf, where c is the speed of light), as frequency increases, wavelength decreases. So, if the frequency is maximum, the wavelength should be minimum, and vice versa.

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