If the end `A` of a wire is irradiated with `alpha`-rays and the other end `B` is irradiated with `beta`-rays. Then

Distinguish between alpha rays and beta rays

Distinguish between various properties of alpha- rays and beta- rays.

Parallel rays are incident on a transparent sphere along its one diameter. After refraction, these rays converge at the other end of this diameter. The refractive index for the material of sphere is

alpha -particles do more damage than beta -rays why?