General Practical Physics I — 2021 Past Questions

University of Ilorin PHY107: 35 questions.

Topics: Graphical methods, Viscosity, Measurement of length, The simple Pendulum, Hooke's law (Static), Specific heat capacity of a liquid (Cooling method), Specific heat capacity of a good conductor (Metal block)

  1. A ball at rest is dropped into a viscous fluid. What happens to the motion of the ball?
    1. Its acceleration increases as terminal velocity is attained
    2. Terminal velocity is attained when the acceleration of the ball is zero
    3. Its velocity decreases linearly with time
    4. The ball stops immediately due to high viscosity
  2. What is the aim of a viscosity experiment?
    1. To determine the coefficient of viscosity of glycerol/oil by timing the speed of a ball bearing
    2. To measure the density of the fluid
    3. To study the effect of temperature on viscosity
    4. To verify Stokes' law theoretically
  3. What is the meaning of viscosity?
    1. Internal friction of a fluid
    2. Density of a fluid
    3. Surface tension of a fluid
    4. Pressure exerted by a fluid
  4. Which statement regarding a simple pendulum is correct?
    1. It is independent of the nature of the bob
    2. Its period increases as its length decreases
    3. Its period doubles as length doubles
    4. Its period is zero when the length is very long
  5. The constant of proportionality in Hooke's law can be called:
    1. Stiffness
    2. Force per unit length
    3. Elastic constant
    4. All of the above
  6. Which is true of a simple pendulum bob at equilibrium? I. Displacement ($y$) = 0; II. Acceleration ($a$) = $\\omega^2 y$; III. Velocity is zero; IV. Kinetic energy is maximum
    1. IV only
    2. I, II, and IV
    3. I and IV
    4. III only
  7. In the equation $y = mx + c$, what is $c$?
    1. Intercept of the graph
    2. Slope of the graph
    3. $y$-parameter on $y$-axis
    4. $x$-parameter on $x$-axis
  8. In the equation $y = mx + c$, what is $m$?
    1. Slope of the graph
    2. Intercept
    3. $y$-parameter
    4. $x$-parameter
  9. In the equation $y = mx + c$, what is $x$?
    1. $x$-parameter on $y$-axis
    2. $x$-parameter on $x$-axis
    3. Slope
    4. Intercept
  10. For $T = 2\\pi\\sqrt{\\frac{L}{g}}$, what is the suitable function to plot on a graph?
    1. $T^2$ against $L$
    2. $T$ against $L$
    3. $\\log T$ against $\\log L$
    4. $T$ against $\\sqrt{L}$
  11. The lid of a calorimeter reduces heat loss primarily by:
    1. Convection
    2. Radiation
    3. Conduction
    4. Evaporation
  12. Which mode of heat transfer does not require a material medium?
    1. Convection
    2. Radiation
    3. Conduction
    4. All require a medium
  13. When a liquid changes to gas, it is known as:
    1. Sublimation
    2. Vaporization
    3. Condensation
    4. Evaporation
  14. When a solid changes directly to gas, it is called:
    1. Melting
    2. Dissolution
    3. Sublimation
    4. Deposition
  15. For the equation $M = K + PV$, what parameter will be on the $y$-axis?
    1. $K$
    2. $M$
    3. $P$
    4. $V$
  16. For $T = 2\\pi\\sqrt{\\frac{L}{g}}$, if the length is increased by a factor of 4, what happens to the period?
    1. Tripled
    2. Doubled
    3. Halved
    4. Unchanged
  17. The purpose of dropping different masses in a liquid is to:
    1. Determine terminal velocity
    2. Show the relationship between masses and liquid
    3. Determine the coefficient of viscosity
    4. Determine the density of the liquid
  18. For $PV^{\\gamma-1} = k$, what graph is plotted to derive $k$ and $\\gamma$?
    1. $\\log P$ against $\\log V$
    2. $P$ against $V$
    3. $\\log V$ against $\\log P$
    4. $\\log k$ against $\\log \\gamma$
  19. For $T = 2\\pi\\sqrt{\\frac{L}{g}}$, what is the slope and intercept of $T$ vs $L$?
    1. $2\\pi$, 0
    2. $2\\pi$, $g$
    3. $4\\pi^2$, 0
    4. Non-linear, no constant slope
  20. Hooke's law cannot be verified if:
    1. The elastic constant is infinitely large
    2. The load exceeds the elastic limit
    3. The spring is inelastic
    4. All of the above
  21. Which instrument is suitable for measuring a thin metal rod?
    1. Micrometer screw gauge
    2. Vernier caliper
    3. Travelling microscope
    4. Meter rule
  22. What instrument is suitable for measuring the distance between two parallel lines?
    1. Vernier caliper
    2. Travelling microscope
    3. Micrometer screw gauge
    4. Meter rule
  23. When determining the coefficient of viscosity of glycerol, balls of different sizes are allowed to fall through it. What is the purpose of this?
    1. It is a waste of time
    2. Different balls have different speeds
    3. Different balls have different terminal speeds
    4. To find the relationship between terminal velocity and size
  24. The forces acting on a body falling through a column of viscous liquid are: I. Surface tension; II. Viscosity; III. Weight; IV. Centrifugal force; V. Upthrust
    1. All forces
    2. II, III, and V
    3. I, II, and IV
    4. I, II, and III
  25. Hooke's law is used to determine:
    1. Mass constant
    2. Hooke's constant
    3. Spring constant
    4. String constant
  26. In the equation $T = KW^a$, the linearized form is:
    1. $K = \\frac{T}{W^a}$
    2. $\\log T = \\log K + a \\log W$
    3. $a = \\frac{T - K}{W}$
    4. $\\frac{a}{K} = \\frac{T}{W}$
  27. The intercept of the linearized form of $T = KW^a$ is:
    1. $a$
    2. $\\log K$
    3. $\\log T$
    4. $\\log W$
  28. A vernier caliper reading for the diameter of a sphere is 0.97 cm. What is its volume?
    1. $4.63 \\times 10^{-7} \\, \\text{m}^3$
    2. $4.63 \\times 10^{-5} \\, \\text{m}^3$
    3. $2.92 \\times 10^{-6} \\, \\text{m}^3$
    4. $2.92 \\times 10^{-4} \\, \\text{m}^3$
  29. In the equation $T = kW^c$, what is $c$?
    1. Slope of the graph
    2. Intercept of the graph
    3. Spring constant
    4. Acceleration due to gravity
  30. In the equation $T = kW^c$, the intercept is:
    1. $c$
    2. $\\log k$
    3. $k$
    4. $\\log c$
  31. In a simple pendulum experiment, the acceleration due to gravity was determined to be $9.67 \\, \\text{ms}^{-2}$. For $T = 2\\pi\\sqrt{\\frac{L}{g}}$, what is the slope of $T^2$ vs $L$?
    1. 4.08
    2. 9.67
    3. 2.42
    4. 39.5
  32. Which of the following is not a necessary precaution when measuring length?
    1. Closing the window
    2. Avoid parallax error
    3. Check for zero error
    4. Ensure proper lighting
  33. If a student measures speed to be 2.97 × 10⁸ m/s and the actual value is 3.0 × 10⁸ m/s, what is the percentage error?
    1. 1%
    2. 0.1%
    3. 0.01%
    4. 0.001%
  34. The diameter of a ball bearing can be measured with what instrument?
    1. Vernier caliper
    2. Micrometer screw gauge
    3. Meter rule
    4. Vernier microscope
  35. How many divisions on the vernier scale are equal to one division on the main scale of a vernier caliper?
    1. 9
    2. 1
    3. 10
    4. 0

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