PHY 205 Quiz

1. Wavelength is inversely proportional to an object’s mass

2. What is a photon?

3. Which of the following is not quantized?

4. What type of radiation can be produced using cathode ray tubes?

5. Which field properties does an electron exhibit due to its charge and motion?

6. What type of process is represented by this equation e† + e¯ → ϒ + ϒ

7. How do the oscillations of the electrical and magnetic components in electromagnetic waves relate to the direction of propagation?

8. In electromagnetic waves, how do the electrical and magnetic components oscillate?

9. According to quantum mechanics, what is the alternate view of electromagnetic radiation (EMR)?

10. Arrange the following types of electromagnetic radiation in order of increasing frequency:

11. What is the electric charge of a positron?

12. High beam of cathode ray in vacuum tube can be steered and manipulated by

13. What term is used to describe the lowest energy state that an electron can occupy within an atom?

14. In quantum mechanics, what role does a photon play in the electromagnetic field?

15. How are the electrons distributed in Thomson's model?

16. In Thompson’s experiment, a a beam of electron travelling at 6.8 x 10^7m/s is bent into a circular path of radius 4cm in the magnetic of induction 10^-2 W/m2. Find the specific charge to mass (e/m)

17. What happens when a metal wire is heated in a vacuum during thermionic emission?

18. What are electromagnetic waves?

19. Electrons absorbs energy in form of photons as they are accelerated

20. Electrons, being fermions, adhere to which principle that prohibits two electrons from occupying the same quantum state?

21. Arrange the following types of electromagnetic radiation in order of increasing wavelength

22. Which of the following statements about electrons within an atom is true?

23. What is thermionic emission?

24. Which of the following statements is TRUE?

25. Why is it necessary for the tube to be in a vacuum during thermionic emission?

26. Which branch of physics is concerned with the quantization of energy and its effects on the interaction of matter and energy?

27. If the dimensions of the nucleus are small enough, what can happen to alpha particles passing very near the nucleus in Rutherford's model?

28. In what devices are cathode ray tubes commonly used?

29. What is the intrinsic angular momentum (spin) value of an electron?

30. What is the relative mass of an electron compared to a proton?

31. In Rutherford's model, where is the positive charge concentrated?

32. In Thomson's model, where are the negatively charged electrons located?

33. What is the significance of alpha particle scattering experiments in Rutherford's model?

34. What is the primary reason for the scattering of alpha particles in Rutherford's model?