Thermionic Emission

1. Mention the properties of cathode rays

Question 1 of 19

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

Question 2 of 19

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

Question 3 of 19

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

Question 4 of 19

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

Question 5 of 19

6. How is vertical deflection achieved in an oscilloscope?

Question 6 of 19

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

Question 7 of 19

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

Question 8 of 19

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

Question 9 of 19

10. Mention the parts of cathode ray oscilloscope?

Question 10 of 19

11. Define Thermionic emission

Question 11 of 19

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

Question 12 of 19

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

Question 13 of 19

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

Question 14 of 19

15. How is horizontal deflection achieved in an oscilloscope?

Question 15 of 19

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

Question 16 of 19

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

Question 17 of 19

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

Question 18 of 19

19. Mention the 2 types of deflection in an oscilloscope

Question 19 of 19