Question

please give one problem on collisons​

Answer 1

Answer:

Explanation:

21. A nucleus of mass number 'A' originally at rest emits an α particle with a speed 'v' the recoil

speed of the daughter nucleus is

1)

2

4 A

ν

−

2)

4

A 4

ν

+

3)

A 4

ν

+

4)

4

A 4