A particle accelerator can increase the kinetic energy of:
A. a neutron and a gamma ray.
B. a gamma ray and a beta particle.
C. an alpha particle and a neutron.
D. an alpha particle and a beta particle.
Gamma rays are pure energy so you can eliminate answers 1 and 2. Only charged particles can have their kinetic energy increased in a particle accelerator. (Electric and magnetic fields are used to speed up the particles and these field have no effect on uncharged particles). Neutrons have no charge so only alpha particles and beta particles will be affected.