Q. A nucleus of mass number 189 splits into two nuclei having mass number 125 and 64. The ratio of radius of two daughter nuclei respectively is :
A) 25 : 16
B) 1 : 1
C) 4 : 5
D) 5 : 4
Explanation
[Solution] $R \propto A^{1/3}$: $(125)^{1/3} : (64)^{1/3} = 5 : 4$. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.