I've given you everything you need to know to solve the problem. I'm certainly not going to solve it for you!gillgill said:um...so...
A cathode ray tube is a vacuum tube that uses a focused beam of electrons to create images on a fluorescent screen. It was commonly used in older television and computer monitors.
"Deflection on screen" refers to the movement of the electron beam across the screen to create images. The beam is deflected by varying the voltage applied to the deflection plates, which controls the position of the beam on the screen.
The numbers represent the voltage applied to the deflection plates. The first number (480V or 960V) is the high voltage applied to the vertical deflection plates, and the second number (36V or 18V) is the low voltage applied to the horizontal deflection plates.
Changing the voltage applied to the deflection plates changes the strength of the electric field, which in turn changes the amount of deflection of the electron beam. Higher voltages will result in larger deflections of the beam, while lower voltages will result in smaller deflections.
The two different voltage values are used to control the movement of the electron beam in two different directions (vertical and horizontal). By changing the voltages independently, the beam can be precisely controlled to create a specific image on the screen.