Question

A nuclide $A$ undergoes $\alpha$ decay and another nuclide $B$ undergoes $\beta$ decay. Then

• A. all the $\alpha -$particles emitted by $A$ will have almost the same speed
• B. the $\alpha -$particles emitted by $A$ may have widely different speeds
• C. all the $\beta -$particles emitted b $B$ will have almost the same speed
• D. the $\beta -$particles emitted by $B$ may have widely different speeds.

Answer 1

Answer: (A), (D)

The correct options are
A all the $\alpha -$particles emitted by $A$ will have almost the same speed
D the $\beta -$particles emitted by $B$ may have widely different speeds.

In αparticle as its kinetic energy.
In β−particle and the antineutrino. Hence, the speed of the β−particle will vary, depending on the energy of the antineutrino.
Hence (A) are correct.