Q. The characteristic X-rays radiation is emitted, when
A) The electrons are accelerated to a fixed energy
B) The source of electrons emits a monoenergetic beam
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
D) The valence electrons in the target atoms are removed as a result of the collision
Explanation
The correct answer is 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.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.