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Electron, Photon, Photo-electric Effect and X-Rays — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsElectron, Photon, Photo-electric Effect and X-Rays1 Mark
MCQ
The characteristic X-ray radiation is emitted, when
  • A
    The electrons are accelerated to a fixed energy
  • B
    The source of electrons emits a monoenergetic beam
  • ✓
    The bombarding electrons knock out electrons from the inner shell of the target atoms and one of the outer electrons falls into this vacancy
  • D
    The valence electrons in the target atoms are removed as a result of the collision
✓

Answer

Correct option: C.
The bombarding electrons knock out electrons from the inner shell of the target atoms and one of the outer electrons falls into this vacancy

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