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PHY 205 Quiz

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OAU PHY 205 Quiz

PHY 205

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

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

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3. Which of the following is not quantized?

 

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

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

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

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7. What is the electric charge of a positron?

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

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9. Which of the following statements is TRUE?

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

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

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

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

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

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2. What is thermionic emission?

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3. 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)

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

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

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

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

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

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2. What is a photon?

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

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

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

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

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

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

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9. What are electromagnetic waves?

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

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

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

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

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

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