Which of the following is true of the particles emitted in radioactive disintegration?
A
The beta particles are deflected more than the alpha particles in a magnetic field
B
The alpha particles are deflected more than the beta particles in a magnetic field
C
The alpha particles is the helium nucleus \(^3\)H\(_1\)
D
The alpha particles are lighter than the beta particles
Verified Correct Answer: A.
Physical Principles & Numerical Solution
Beta particles (electrons) have a much higher charge-to-mass ratio than alpha particles, so they experience greater deflection in a magnetic field.
Source: Myschool Past Questions Archive (Record #78285)