Q. The wavelength of $X$-rays decreases, when
A) Temperature of target is increased
B) Intensity of electron beam is increased
C) K.E. of electrons striking the target is increased
D) K.E. of electrons striking the target is decreased
Explanation
(c) $\lambda_{\min} = \frac{hc}{eV(energy)};$ when $KE$ (or $eV$) increases, $\lambda$ decreases
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.