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) 21/3 : 1

(b) 1 : 31/2

(c) 31/2 : 1

(d) 1 : 21/3 .

Answer 1

(d) : Momentum is conserved during**disintegration**