Which of the following statement is not correct about the characterstics of cathode rays

Options

A. They start from the cathode and move towards the anode
B. They travel in straight line in the absence of an external electrical or magnetic field
C. Charactersitics of cathode rays do not depend upon the material of electrods in carthode ray tube
D. Characterstics of cathode rays depend upon the nature of gas present in the cathode ray tube

Answer

D

Explanation

Properties of cathode rays does not depend one nature of gas or cathode in the discharge tube