Q. CRT is a :
✅ Correct Answer: (B)
Vacuum tube
Explanation:
CRT (Cathode Ray Tube) is a vacuum tube that contains one or more electron guns (cathodes) and a phosphorescent screen.
- It was commonly used in older televisions and computer monitors to display images.
- The tube is a vacuum because it needs to ensure that the electrons can travel freely without interference from air molecules.
Explanation by: Krishna Sharma
CRT (Cathode Ray Tube) is a vacuum tube that contains one or more electron guns (cathodes) and a phosphorescent screen.
- It was commonly used in older televisions and computer monitors to display images.
- The tube is a vacuum because it needs to ensure that the electrons can travel freely without interference from air molecules.