What occurs during an intensity modulation process in CRT?

During an intensity modulation process in a cathode ray tube (CRT), the brightness of a specific spot on the screen is adjusted. Intensity modulation refers to the varying level of electrical signals that control the intensity of the electron beam hitting the phosphorescent screen. By modifying the voltage of the beam, the brightness of the phosphor glow can be increased or decreased at specific locations, allowing for the representation of different image tones or colors based on the data being displayed.

This modulation is crucial for creating images, as it enables the CRT to produce variations in brightness that contribute to the visual representation of the intended content. Each spot on the screen can be individually controlled, enabling detailed images and a range of tones to be displayed effectively. The other options pertain to different functions or capabilities that do not directly relate to the fundamental process of intensity modulation in the CRT display technology.