Let's answer each part step by step: --- ### 6.1 A cathode ray tube (CRT) is divided into FIVE sections. List all FIVE sections of a CRT. **Step-by-step Explanation:** A Cathode Ray Tube (CRT) is an electronic device used for displaying images. It consists of several main parts, usually divided into five sections: 1. **Electron Gun** - This section generates and emits a stream of electrons (the "cathode rays"). 2. **Control Grid** - This modulates the intensity of the electron beam (controls brightness). 3. **Focusing System** - This section focuses the electron beam into a fine spot. 4. **Deflection System** - This section moves (deflects) the focused electron beam to desired positions on the screen (for scanning). 5. **Fluorescent Screen (or Phosphor-coated Screen)** - This is the part where the electron beam strikes and produces the visible image. **Final Answer:** The FIVE sections of a CRT are: 1. Electron Gun 2. Control Grid 3. Focusing System 4. Deflection System 5. Fluorescent Screen --- ### 6.2 List THREE things that the converging path of the beam of electromagnetic focusing. **Step-by-step Explanation:** Electromagnetic focusing is used in CRTs to converge the electron beam to a fine spot. The converging path involves certain factors or things: 1. **Magnetic Field Strength** - The strength of the magnetic field (produced by focusing coils) affects the convergence of the electron beam. 2. **Position of Focusing Coils** - The placement and alignment of the focusing coils help direct the beam toward the desired spot. 3. **Current through Focusing Coil** - The amount of current passing through the coil controls the intensity of the magnetic field, thus affecting focusing. **Final Answer:** Three things about the converging path of the beam of electromagnetic focusing are: 1. Magnetic field strength 2. Position (placement) of focusing coils 3. Current through focusing coils --- ### 6.3 Name TWO types of deflection systems. **Step-by-step Explanation:** In CRTs, the deflection system controls the direction of the electron beam. There are two main types: 1. **Electrostatic Deflection System** - Uses electric fields (between plates) to deflect the beam. 2. **Electromagnetic Deflection System** - Uses magnetic fields (produced by coils) to deflect the beam. **Final Answer:** TWO types of deflection systems are: 1. Electrostatic deflection system 2. Electromagnetic deflection system --- ## Summary Table | Question | Answer | |----------|--------| | 6.1 | Electron Gun, Control Grid, Focusing System, Deflection System, Fluorescent Screen | | 6.2 | Magnetic field strength, Position of focusing coils, Current through focusing coils | | 6.3 | Electrostatic deflection system, Electromagnetic deflection system |

Let's go through each question step by step with detailed explanations and final answers. --- ### 6.1 A cathode ray tube (CRT) is divided into FIVE sections. List all FIVE sections of a CRT. **Step-by-step explanation:** A CRT is an electronic device used primarily in older television sets and oscilloscopes to display images. It contains several key parts that serve different functions: 1. **Electron Gun**: - Produces a beam of electrons by thermionic emission. 2. **Control Grid**: - Modulates the number of electrons, controlling the brightness of the image. 3. **Focusing System**: - Focuses the electron beam into a fine point for sharp images. 4. **Deflection System**: - Steers the electron beam horizontally and vertically to scan the screen. 5. **Fluorescent Screen (or Phosphor-coated Screen)**: - The part that glows when struck by electrons, creating visible images. **Final answer:** The five sections of a CRT are: 1. Electron Gun 2. Control Grid 3. Focusing System 4. Deflection System 5. Fluorescent Screen --- ### 6.2 List THREE things that influence the converging path of the beam of electromagnetic focusing. **Step-by-step explanation:** Electromagnetic focusing involves using magnetic fields to converge the electron beam into a narrow, focused spot. The factors that influence this converging path include: 1. **Magnetic Field Strength**: - The intensity of the magnetic field produced by the focusing coil affects how tightly the beam converges. 2. **Position of the Focusing Coils**: - The physical placement and distance of the focusing coils relative to the electron gun determine the convergence point. 3. **Current in the Focusing Coils**: - The amount of current supplied influences the magnetic field strength and thus the degree of focusing. **Final answer:** Three factors that influence the converging path are: 1. Magnetic field strength 2. Position of the focusing coils 3. Current passing through the focusing coils --- ### 6.3 Name TWO types of deflection systems. **Step-by-step explanation:** In CRTs, deflection systems are used to steer the electron beam across the screen: 1. **Electrostatic Deflection System**: - Uses electric fields generated between charged plates to deflect the electron beam. 2. **Electromagnetic Deflection System**: - Uses magnetic fields produced by coils (electromagnets) around the neck of the tube to steer the beam. **Final answer:** The two types of deflection systems are: 1. Electrostatic deflection system 2. Electromagnetic deflection system --- **Summary:** | Part | Answer | |-------|---------| | 6.1 | Electron Gun, Control Grid, Focusing System, Deflection System, Fluorescent Screen | | 6.2 | Magnetic field strength, Position of focusing coils, Current through focusing coils | | 6.3 | Electrostatic deflection system, Electromagnetic deflection system | I hope this detailed explanation helps!