1a)if accelerating voltage is doubled in a CRT the deflection will change from "d" to ____?
b) if magnetic field strength is doubled, deflection in a CRT will change from "d" to ___?
To answer these questions, we need to understand the behavior of the deflection in a CRT (Cathode Ray Tube) based on changes in the accelerating voltage and magnetic field strength.
a) If the accelerating voltage is doubled in a CRT, the deflection will change from "d" to a new value. To understand this, we need to consider the relationship between the accelerating voltage and the deflection in a CRT.
The deflection in a CRT is determined by the strength of the electric field created by the accelerating voltage and the charge of the electrons that pass through the tube. Specifically, the deflection is directly proportional to the accelerating voltage.
So, if the accelerating voltage is doubled, the electric field strength will also double, resulting in an increased deflection. Therefore, the deflection changes from "d" to a higher value.
b) If the magnetic field strength is doubled, the deflection in a CRT will also change from "d" to a new value. In this case, we need to consider the relationship between the magnetic field strength and the deflection in a CRT.
The deflection in a CRT is also influenced by a magnetic field, which deflects the electron beam perpendicular to the direction of the field. The deflection in a magnetic field depends on the strength of the magnetic field and the charge and velocity of the electrons passing through the tube. Specifically, the deflection is directly proportional to the magnetic field strength.
Therefore, if the magnetic field strength is doubled, the deflection will also double. As a result, the deflection changes from "d" to a higher value.
In summary, when the accelerating voltage is doubled, the deflection in a CRT will increase, and when the magnetic field strength is doubled, the deflection will also increase.