Thermionic Emission

1. In the cathode ray tube, which part of it emits electrons by thermionic emission?

Question 1 of 19

2. Mention the parts of cathode ray oscilloscope?

Question 2 of 19

3. Which part of the cathode ray tube attracts electrons?

Question 3 of 19

4. How is vertical deflection achieved in an oscilloscope?

Question 4 of 19

5. How is horizontal deflection achieved in an oscilloscope?

Question 5 of 19

6. Explain how a greater degree of focusing of cathode ray beams is achieved in an oscilloscope?

Question 6 of 19

7. Name what controls the intensity of the cathode ray beam in an oscilloscope

Question 7 of 19

8. Define Thermionic emission

Question 8 of 19

9. Cathode rays are a stream of fast moving electrons?

Question 9 of 19

10. State the reason why the screen of the cathode ray tube oscilloscope coated with graphite?

Question 10 of 19

11. What causes the electric field between the anodes in a cathode ray oscilloscope?

Question 11 of 19

12. Mention the 2 types of deflection in an oscilloscope

Question 12 of 19

13. What is produced when cathode rays are suddenly stopped by a metal target?

Question 13 of 19

14. Which of the following is NOT among the uses of a cathode ray oscilloscope?

Question 14 of 19

15. Why is the tube evacuated in the cathode ray tube?

Question 15 of 19

16. In a cathode ray oscilloscope which part is used to supply the electrons to be directed towards the screen?

Question 16 of 19

17. Which of the following statement is INCORRECT about Cathode rays?

Question 17 of 19

18. Which type of current is supplied to the Extra High Tension (EHT) source of the cathode ray oscilloscope?

Question 18 of 19

19. Mention the properties of cathode rays

Question 19 of 19