Consider the following statements about cathode rays:(a) They are negatively charged particles(b) The characteristics of cathode rays do not depend upon the material of electrodes used.(c) They start from anode and move towards cathode.The correct statements are:

The correct statements are:

(a) They are negatively charged particles: This is true. Cathode rays are streams of electrons, and electrons are negatively charged particles.

(b) The characteristics of cathode rays do not depend upon the material of electrodes used: This is also true. The properties of cathode rays (such as their charge and mass) are independent of the material of the electrodes or the gas present in the tube.

(c) They start from anode and move towards cathode: This is false. Cathode rays actually move from the cathode (negative electrode) to the anode (positive electrode). The term 'cathode rays' is derived from the fact that these rays originate from the cathode.

So, the correct statements are (a) and (b).