Which of the following is TRUE of the particles emitted in radioactive disintegration?
A
the beta particle is the helium nucleus H
B
the alpha particle is lighter than the beta particle
C
the alpha particle is deflected more than the beta particle in a magnetic field
D
the beta particle is deflected more than the alpha particle in a magnetic field
Verified Correct Answer: D.
Physical Principles & Numerical Solution
Due to their significantly smaller mass, beta particles have much less inertia and are easily "pushed" by the magnetic force, leading to a much greater deflection (curved path) compared to the heavy, bulky alpha particles.
Source: Myschool Past Questions Archive (Record #28362)