Q. If the potential difference between the anode and cathode of the $X$-ray tube is increase
A) The peaks at $R$ and $S$ would move to shorter wavelength
B) The peaks at $R$ and $S$ would remain at the same wavelength
C) The cut off wavelength at $P$ would increase
D) (b) and (c) both are correct
Explanation
(d) Peaks on the graph represent characteristic $X$-ray spectrum. Every peak has a certain wavelength, which depends upon the transition of electron inside the atom of the targe. While $\lambda_{\min}$ depends upon the accelerating voltage [As $\lambda_{\min} \propto 1/V$]
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.