Q. The graph that correctly represents the relation of frequency $v$ of a particular characteristic $X$-ray with the atomic number $Z$ of the material is
A)
B)
C)
D)
Explanation
(c) By Moseley’s law, $\sqrt{v} = a(Z - b)\ $or, $v = a^{2}(Z - b)^{2}$
Comparing with the equation of a parabola, $y^{2} = 4ax$ it conforms to graph $c$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.