Q. The radius $r$ of half period zone is proportional to
A) $\sqrt{n}$
B) $\frac{1}{\sqrt{n}}$
C) $n^{2}$
D) $\frac{1}{n}$
Explanation
(a) $r_{n} = \sqrt{nd\lambda} \Rightarrow r_{n} \propto \sqrt{n}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.