General Practical Physics I — 2020 Past Questions

University of Ilorin PHY107: 59 questions.

Topics: Measurement of length, Viscosity, Graphical methods, Hooke's law (Static), The simple Pendulum, Hooke's law (Dynamic), Moment of inertia, Specific heat capacity of a liquid (Cooling method)

  1. Increase in viscosity causes:
    1. Increase in terminal velocity
    2. Decrease in terminal velocity
    3. No change in terminal velocity
    4. Increase in acceleration
  2. How to reduce friction between two surfaces in contact?
    1. Add a lubricant
    2. Add a rubricant
    3. Add a wedge
    4. Increase surface roughness
  3. The closeness of a set of values is called:
    1. Accuracy
    2. Precision
    3. Concise
    4. Real
  4. Experimental readings are repeated to avoid:
    1. Zero error
    2. Systematic error
    3. Environmental error
    4. Random error
  5. The copper lid in a calorimeter primarily stops heat loss by:
    1. Conduction
    2. Convection
    3. Radiation
    4. Evaporation
  6. Values that are close to one another are said to be:
    1. Accurate
    2. Precise
    3. Concise
    4. Real
  7. Values close to the true value are said to be:
    1. Accurate
    2. Precise
    3. Concise
    4. Real
  8. Why measure an experiment more than once?
    1. To prevent environmental error
    2. To prevent systematic error
    3. To prevent random error
    4. To increase instrument precision
  9. The meter rule has a reading accuracy of:
    1. 0.1 cm
    2. 0.001 cm
    3. 0.5 cm
    4. 0.05 cm
  10. Internal friction in a liquid is called:
    1. Surface tension
    2. Amalgamation
    3. Viscosity
    4. All of the above
  11. In Hooke's law ($F = kx$), $k$ is also called:
    1. Elastic constant
    2. Spring constant
    3. Stiffness
    4. All of the above
  12. A set of readings close to one another is said to be:
    1. Accurate
    2. Precise
    3. Concise
    4. Real
  13. The length of a rod measured as 15 cm using a meter rule is best reported as:
    1. $(15.0 \\pm 1.0)$ cm
    2. $(15.0 \\pm 0.1)$ cm
    3. $(15.0 \\pm 0.05)$ cm
    4. $(15.0 \\pm 0.5)$ cm
  14. Which instrument is best for measuring short horizontal/vertical distances?
    1. Meter rule
    2. Travelling microscope
    3. Vernier calipers
    4. Micrometer screw gauge
  15. In thermometer construction, the bore diameter is measured using:
    1. Meter rule
    2. Vernier calipers
    3. Micrometer screw gauge
    4. Vernier microscope
  16. If a student measures speed as $2.97 \\times 10^8$ m/s (actual: $3.0 \\times 10^8$ m/s), the percentage error is:
    1. 1%
    2. 0.1%
    3. 0.01%
    4. 0.001%
  17. Which set of instruments is used to determine the coefficient of viscosity?
    1. Stopwatch, vernier caliper, measuring cylinder with glycerol
    2. Stopwatch, vernier caliper, glycerol
    3. Stopwatch, micrometer screw gauge, measuring cylinder with glycerol, steel balls
    4. Stopwatch, micrometer screw gauge, glycerol
  18. Using balls of different sizes in viscosity experiments helps to:
    1. Show speed variation
    2. Determine terminal velocity vs. size
    3. Waste time
    4. Measure density
  19. When vernier calipers refuse to close fully, it indicates:
    1. Random error
    2. Zero error
    3. Absolute error
    4. Relative error
  20. Hooke's law holds for a spring whose:
    1. Elastic limit is exceeded
    2. Proportional limit is reached
    3. Elastic limit is not exceeded
    4. All of the above
  21. A ball falling in glycerol for viscosity determination:
    1. Accelerates before terminal velocity
    2. Decelerates before terminal velocity
    3. Has decreasing acceleration until terminal velocity
    4. Reaches constant velocity at terminal velocity
  22. Forces on a body immersed in water include: I. Weight; II. Upthrust; III. Viscosity; IV. Mass
    1. I, II, III
    2. II, III, IV
    3. I, II
    4. II, IV
  23. Given a spiral spring, retort stand, and masses, the experiment aims to:
    1. Determine spring constant $k$
    2. Measure extension $e$
    3. Verify Hooke's law
    4. All of the above
  24. Motion of a drum rolling down an inclined plane includes:
    1. Circular + translational
    2. Rotational + translational
    3. Rotational + circular
    4. Rectilinear + circular
  25. For $T = 2\\pi\\sqrt{\\frac{L}{g}}$, the slope of $T^2$ vs. $L$ is:
    1. $\\frac{\\pi^2}{g}$
    2. $\\frac{2\\pi^2}{g}$
    3. $\\frac{4\\pi^2}{g}$
    4. $\\frac{2\\pi}{g}$
  26. If the slope of $T^2$ vs. $m$ for $T = 2\\pi\\sqrt{\\frac{m}{k}}$ is 0.05, $k$ is:
    1. $0.8\\pi^2$
    2. $8\\pi^2$
    3. $80\\pi^2$
    4. $800\\pi^2$
  27. Parallax error refers to:
    1. Apparent object movement due to observer's position
    2. Observer movement causing object shift
    3. Multiple observers seeing different positions
    4. None of the above
  28. The slope of $Q^m = aP^n$ in a log-log plot is:
    1. $\\frac{n}{m}$
    2. $\\frac{1}{m}$
    3. $\\frac{1}{n}$
    4. $\\frac{m}{n}$
  29. For $\\log I_e = \\log A + n\\log T$, how are $A$ and $n$ determined?
    1. $A$ from slope, $n$ from intercept
    2. $A$ from intercept, $n$ from slope
    3. $A$ from slope, $n$ from x-intercept
    4. $A$ from x-intercept, $n$ from slope
  30. Increase in viscosity causes:
    1. Increase in terminal velocity
    2. Decrease in terminal velocity
    3. No change in terminal velocity
    4. Increase in acceleration
  31. How to reduce friction between two surfaces in contact?
    1. Add a lubricant
    2. Add a rubricant
    3. Add a wedge
    4. Increase surface roughness
  32. The closeness of a set of values is called:
    1. Accuracy
    2. Precision
    3. Concise
    4. Real
  33. Experimental readings are repeated to avoid:
    1. Zero error
    2. Systematic error
    3. Environmental error
    4. Random error
  34. The copper lid in a calorimeter primarily stops heat loss by:
    1. Conduction
    2. Convection
    3. Radiation
    4. Evaporation
  35. Values that are close to one another are said to be:
    1. Accurate
    2. Precise
    3. Concise
    4. Real
  36. Values close to the true value are said to be:
    1. Accurate
    2. Precise
    3. Concise
    4. Real
  37. Why measure an experiment more than once?
    1. To prevent environmental error
    2. To prevent systematic error
    3. To prevent random error
    4. To increase instrument precision
  38. The meter rule has a reading accuracy of:
    1. 0.1 cm
    2. 0.001 cm
    3. 0.5 cm
    4. 0.05 cm
  39. Internal friction in a liquid is called:
    1. Surface tension
    2. Amalgamation
    3. Viscosity
    4. All of the above
  40. In Hooke's law ($F = kx$), $k$ is also called:
    1. Elastic constant
    2. Spring constant
    3. Stiffness
    4. All of the above
  41. A set of readings close to one another is said to be:
    1. Accurate
    2. Precise
    3. Concise
    4. Real
  42. The length of a rod measured as 15 cm using a meter rule is best reported as:
    1. $(15.0 \\pm 1.0)$ cm
    2. $(15.0 \\pm 0.1)$ cm
    3. $(15.0 \\pm 0.05)$ cm
    4. $(15.0 \\pm 0.5)$ cm
  43. Which instrument is best for measuring short horizontal/vertical distances?
    1. Meter rule
    2. Travelling microscope
    3. Vernier calipers
    4. Micrometer screw gauge
  44. In thermometer construction, the bore diameter is measured using:
    1. Meter rule
    2. Vernier calipers
    3. Micrometer screw gauge
    4. Vernier microscope
  45. If a student measures speed as $2.97 \\times 10^8$ m/s (actual: $3.0 \\times 10^8$ m/s), the percentage error is:
    1. 1%
    2. 0.1%
    3. 0.01%
    4. 0.001%
  46. Which set of instruments is used to determine the coefficient of viscosity?
    1. Stopwatch, vernier caliper, measuring cylinder with glycerol
    2. Stopwatch, vernier caliper, glycerol
    3. Stopwatch, micrometer screw gauge, measuring cylinder with glycerol, steel balls
    4. Stopwatch, micrometer screw gauge, glycerol
  47. Using balls of different sizes in viscosity experiments helps to:
    1. Show speed variation
    2. Determine terminal velocity vs. size
    3. Waste time
    4. Measure density
  48. When vernier calipers refuse to close fully, it indicates:
    1. Random error
    2. Zero error
    3. Absolute error
    4. Relative error
  49. Hooke's law holds for a spring whose:
    1. Elastic limit is exceeded
    2. Proportional limit is reached
    3. Elastic limit is not exceeded
    4. All of the above
  50. A ball falling in glycerol for viscosity determination:
    1. Accelerates before terminal velocity
    2. Decelerates before terminal velocity
    3. Has decreasing acceleration until terminal velocity
    4. Reaches constant velocity at terminal velocity
  51. Forces on a body immersed in water include: I. Weight; II. Upthrust; III. Viscosity; IV. Mass
    1. I, II, III
    2. II, III, IV
    3. I, II
    4. II, IV
  52. Given a spiral spring, retort stand, and masses, the experiment aims to:
    1. Determine spring constant $k$
    2. Measure extension $e$
    3. Verify Hooke's law
    4. All of the above
  53. Motion of a drum rolling down an inclined plane includes:
    1. Circular + translational
    2. Rotational + translational
    3. Rotational + circular
    4. Rectilinear + circular
  54. For $T = 2\\pi\\sqrt{\\frac{L}{g}}$, the slope of $T^2$ vs. $L$ is:
    1. $\\frac{\\pi^2}{g}$
    2. $\\frac{2\\pi^2}{g}$
    3. $\\frac{4\\pi^2}{g}$
    4. $\\frac{2\\pi}{g}$
  55. If the slope of $T^2$ vs. $m$ for $T = 2\\pi\\sqrt{\\frac{m}{k}}$ is 0.05, $k$ is:
    1. $0.8\\pi^2$
    2. $8\\pi^2$
    3. $80\\pi^2$
    4. $800\\pi^2$
  56. Parallax error refers to:
    1. Apparent object movement due to observer's position
    2. Observer movement causing object shift
    3. Multiple observers seeing different positions
    4. None of the above
  57. The slope of $Q^m = aP^n$ in a log-log plot is:
    1. $\\frac{n}{m}$
    2. $\\frac{1}{m}$
    3. $\\frac{1}{n}$
    4. $\\frac{m}{n}$
  58. For log Iₑ = log A + n log T, how are A and n determined?
    1. A from slope, n from intercept
    2. A from intercept, n from slope
    3. A from slope, n from x-intercept
    4. A from x-intercept, n from slope
  59. For a pendulum swinging between points L and J with K as the equilibrium position: I. The potential energy is greatest at K; II. The kinetic energy is greatest at K; III. L & J are the maximum displacements; IV. The velocity is 0 at J. Which statements are correct?
    1. I only
    2. II and III
    3. II, III, and IV
    4. IV only

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