(a)  State three properties which are common to both the beta rays and cathode rays.

(b)  How do beta rays differ from cathode rays?

Asked by Topperlearning User | 4th Jun, 2014, 01:23: PM

Expert Answer:

(a)  Common properties of beta rays and cathode rays :

(i)  Both are negatively charged with charge and mass equal to that of an electron.

(ii)  Both are deflected by the electric and magnetic fields.

(iii)  Both cause fluorescence on striking a fluorescent material.

(b)  Difference :  Beta rays differ from cathode rays in their origin.  Beta rays are given out from the nucleus of the atom while cathode rays are given out from the orbital electrons.

Answered by  | 4th Jun, 2014, 03:23: PM