What are important properties of cathode rays?
Or
Give four characteristics of cathode rays.
Important properties of cathode rays:
(i) Cathode rays travel in straight lines and thus cast shadows of objects placed in their path.
(ii) Cathode rays possess material particles because they can rotate a light paddle wheel placed in their path.
(iii) They are deflected towards positive plate thus showing that these are negatively charged particles known as electrons.
(iv) They ionise gas through which they pass.
(v) They are deflected by magnetic fields.
(vi) The nature of cathode rays is independent of the material of cathode. Hence they are common constituents of all matter.
(vii) They can penetrate through thin metallic sheet.
(viii)They can produce X-rays.
(ix) The mass of a cathode ray particle is very-very small as compared to the mass of the atom from which it is formed.
