Question

A nucleus disintegrates into two nuclear parts which have their velocities in the ratio 2 : 1. The ratio of their nuclear sizes will be

(a) 2^1/3 : 1 

(b) 1 : 3^1/2 

(c) 3^1/2 : 1 

(d) 1 : 2^1/3 .

Answer 1

(d) : Momentum is conserved during disintegration