The greater the voltage supplied to the electrostatic lenses, the ____ the acceleration and the ____ the focal point to the input screen.

Question

Quizplus · Accepted Answer

According to the given information, when the voltage supplied to the electrostatic lenses is increased, the acceleration of the electrons passing through the lenses also increases, leading to greater speed. This increased speed means that the electron beam will focus at a closer distance to the input screen, resulting in a smaller focal point. Therefore, a greater voltage supplied to the electrostatic lenses will result in a closer focal point to the input screen. Choice B correctly reflects this relation.

The Greater the Voltage Supplied to the Electrostatic Lenses, the ____