Question

In nucleus of mass number ????, originally at rest, emits an
????-particle with speed ????. The daughter nucleus recoils with a speed :
(a) 2 ???? (b) 4 ????
???? + 4 ???? + 4

(c) 4 ???? (d) 2 ????
???? - 4 ???? - 4

Answer 1

Explanation:

According to conservation of momentum

4v=(a−4)v

′

⇒v

′

=

A−4

4v

solution