Directions: In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
A nuclide A undergoes a-decay and another nuclide B undergoes\[\beta -\]decay. (1) All the a-particles emitted by A will have almost the same speed (2) The a-particles emitted by A may have widely different speeds (3) All the P-particles emitted by B will have almost the same speed (4) The p-particles emitted by B may have widely different speeds.A) 1 and 2 are correct
B) 2 and 3 are correct
C) 1 and 4 and correct
D) 1, 2 and 4 are correct
Correct Answer: C
Solution :
In \[\alpha -\]decay the entire energy is carried away by the \[\alpha -\]particle as its kinetic energy. In\[\beta -\]decay, the energy is shared between the \[\beta -\]particle and the antineutrino. Hence, the speed of the p-particle will vary depending on the energy of the antineutrino.
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