KCET 2015 Physics Solved Paper

Given, nucleus at rest splits into two nuclear parts, then
m1v1=m2v2
⇒‌

v1

v2

=‌

m2

m1

We know that A∝R2
Also, A∝m
⇒m∝R3
⇒

v1

v2

=

R23

R13

Now, given ratio of radii is 1 : 2.
Therefore, the velocities are in the ratio 8 : 1.