An electron is accelerated through 40 kV before striking the target of an X-ray tube. In one interaction it loses 75% of its kinetic energy in producing a single X-ray photon. Take hc = 1240 eV·nm. If the wavelength of this photon is approximately N pm, find N to the nearest integer.

Physics · Atomic Structure and X-rays · x-rays and its types

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An electron is accelerated through 40 kV before striking the target of an X-ray tube. In one interaction it loses 75% of its kinetic energy in producing a single X-ray photon. Take hc = 1240 eV·nm. If the wavelength of this photon is approximately N pm, find N to the nearest integer.