EASY
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A cathode ray tube (CRT) is a type of vacuum tube that produces images when an electron beam collides with a phosphorescent surface.

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Important Questions on Thermionic Emission and Radioactivity

EASY
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
Write any one application of CRT.
MEDIUM
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
What is the function of electron gun and pair of deflecting plates in cathode ray tube?
EASY
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
What is the full form of CRT?
HARD
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
Draw a cathode ray tube consisting of a heater, a cathode, a cylindrical anode and a deflecting system. Show how will you connect a low tension battery of 6 V and a high tension one of 1000 V to the electrodes of the tube.
HARD
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
Draw a cathode ray tube consisting of a heater, a cathode, a cylindrical anode and a deflecting system. Why are materials of low work function preferred as thermionic cathode materials?
MEDIUM
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
Which of the following is considered the main component of a cathode ray tube?
MEDIUM
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
Briefly explain the working of a fluorescent screen.
EASY
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
The _____-ray tube's function is to transform an electrical signal into a visual display.
EASY
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
How is a cathode ray tube used to convert an electrical signal into a visual signal ?
EASY
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
CRT is not used in which one of the following apparatus?
EASY
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
If electric and magnetic fields are applied simultaneously in the deflecting region, is it possible for electron beam to pass undeviated, explain.
EASY
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
What is the function of: electron gun
MEDIUM
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
What evidence supported the conclusion that the bright spots on the fluorescent screen in the cathode ray tube experiment were electrons?
MEDIUM
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
Explain about the deflection system of CRT.
EASY
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
The purpose of electron gun in a cathode ray tube is :
MEDIUM
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
Name the main part of cathode ray oscillograph or Tube (CRT) and state their functions.
EASY
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
CRT stands for _____-ray tube.
MEDIUM
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
When a/an _____ beam impacts a fluorescent screen, it forms a bright spot due to fluorescence.
MEDIUM
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
Which one of the following factors is responsible for the deflection of an electron beam inside a CRT?
EASY
Science>Physics>Thermionic Emission and Radioactivity>Hot Cathode Ray Tube
How can you increase the brightness of spot on the screen.