Q. In above question the energy of the characteristic $X$-rays given out is
A) Less than $40\ keV$
B) More than $40\ keV$
C) Equal to $40\ keV$
D) $\geq 40\ keV$
Explanation
The correct answer is Option A: Less than $40\ keV$.
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.