1. Cathode Ray Tube is a long glass tube filled with gas and sealed at both the ends.
2. It consists of two metal plates (which act as electrodes) connected with high voltage.
3. The electrode which is connected to the negative terminal of the battery is. called the cathode (negative electrode).
4. The electrode connected to the positive terminal is called the anode(positive electrode).
5. There is a side tube which is connected to a pump.
6. The pump is used to lower the pressure inside the discharge tube.
