Which one of the following statements regarding cathode rays is not correct ?
Cathode ray particles are electrons.
Cathode ray particles start from anode and move towards cathode.
In the absence of electrical and magnetic fields, cathode rays travel in straight lines.
Television picture tubes are cathode ray tubes.
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC NDA-2 – 2019
Cathode rays are streams of negatively charged particles (electrons). In a discharge tube, these electrons are emitted from the cathode (the negative electrode) and are accelerated towards the anode (the positive electrode) by the electric field between them. Therefore, cathode rays move from the cathode towards the anode, not the other way around.