Q. $r_{1}$and $r_{2}$ are the radii of atomic nuclei of mass numbers 64 and 27 respectively. The ratio ($r_{1}/r_{2})$ is
A) 64/27
B) 27/64
C) 4/3
D) 1
Explanation
(c) $\frac{r_{1}}{r_{2}} = \left( \frac{A_{1}}{A_{2}} \right)^{1/3} = \left( \frac{64}{27} \right)^{1/3} = \frac{4}{3}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.