General Practical Physics I — 2025 Past Questions

University of Ilorin PHY107: 39 questions.

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

  1. If the period \( T = 2\\pi \\sqrt{\\frac{u}{C}} \) is quadrupled, what happens to \( T \)?
    1. Doubled
    2. Quadrupled
    3. Halved
    4. Remains the same
  2. For the equation \( T = 2\\pi \\sqrt{\\frac{u}{C}} \), where \( C = \\frac{nmr^2}{2u} \), if the graph of \( \\log T \) is plotted against \( \\log \\frac{1}{r} \), where can the moment of inertia \( u \) be determined from?
    1. y-intercept
    2. Slope
    3. x-intercept
    4. None of the above
  3. Determine the coefficient of viscosity \( \\eta \) given the slope of \( v \) against \( r^2 \) is \( 2.62 \\times 10^7 \), density of the ball \( \\rho_b = 7.8 \\times 10^7 \\, \\text{kg/m}^3 \), density of the liquid \( \\rho_l = 1.26 \\times 10^7 \\, \\text{kg/m}^3 \), and \( g = 10 \\, \\text{m/s}^2 \).
    1. \( 1.23 \\times 10^7 \\, \\text{Pa·s} \)
    2. \( 2.62 \\times 10^7 \\, \\text{Pa·s} \)
    3. \( 5.12 \\times 10^7 \\, \\text{Pa·s} \)
    4. \( 3.45 \\times 10^7 \\, \\text{Pa·s} \)
  4. In the coefficient of viscosity experiment, the slope of the graph of \( v \) against \( r^2 \) represents:
    1. \( \\frac{2g(\\rho_b - \\rho_l)}{9\\eta} \)
    2. \( \\frac{9\\eta}{2g(\\rho_b - \\rho_l)} \)
    3. \( \\frac{g(\\rho_b - \\rho_l)}{2\\eta} \)
    4. \( \\frac{\\eta}{g(\\rho_b - \\rho_l)} \)
  5. If the length of the string in a simple pendulum is doubled, the period will:
    1. Double
    2. Remain constant
    3. Increase by \( \\sqrt{2} \)
    4. Decrease by \( \\sqrt{2} \)
  6. An object moves such that its acceleration is directed towards a fixed point \( y \) and is given by:
    1. \( -w^2y \)
    2. \( (v - u)t \)
    3. \( -\\frac{k}{y^2} \)
    4. \( -gy \)
  7. Which type of heat transfer does not require a material medium?
    1. Conduction
    2. Convection
    3. Radiation
    4. Thermal expansion
  8. The reason for repeating the time of fall of a ball bearing in a viscosity experiment is to:
    1. Attain accurate value of coefficient of viscosity
    2. Reduce systematic error of stopwatch
    3. Increase the speed of the ball
    4. Decrease the effect of gravity
  9. The diameter of a thin metal rod is measured with:
    1. Vernier caliper
    2. Micrometer screw gauge
    3. Metre rule
    4. Travelling microscope
  10. A student measured a length with a metre rule and obtained 15 cm. What is the possible error?
    1. \( 15 \\pm 0.5 \) cm
    2. \( 15 \\pm 0.1 \) cm
    3. ( 15 \\pm 0.05 \) cm
    4. \( 15 \\pm 0.01 \) cm
  11. The jaw of a fixed scale of Vernier caliper was not properly closed. This introduces:
    1. Zero error
    2. Erratic error
    3. Random error
    4. Systematic error
  12. The acceleration of a simple pendulum is directed towards the:
    1. Equilibrium position
    2. Point of suspension
    3. Amplitude
    4. Extreme position
  13. Which graph is plotted in specific heat capacity (without cooling)?
    1. Temperature vs mass
    2. Temperature vs time
    3. Temperature vs volume
    4. Heat vs temperature
  14. The internal diameter of a hollow tube is measured with:
    1. Vernier caliper
    2. Micrometer screw gauge
    3. Travelling microscope
    4. Metre rule
  15. Given length of string \( L = 1.72 \\, \\text{m} \) and amplitude \( A = 0.15 \\, \\text{m} \), calculate the acceleration (take \( g = 10 \\, \\text{m/s}^2 \)).
    1. \( 0.87 \\, \\text{m/s}^2 \)
    2. \( 1.15 \\, \\text{m/s}^2 \)
    3. \( 0.52 \\, \\text{m/s}^2 \)
    4. \( 2.34 \\, \\text{m/s}^2 \)
  16. What is the moment of inertia of a cylindrical rod about its central axis?
    1. \( \\frac{1}{12}ML^2 \)
    2. \( \\frac{1}{2}MR^2 \)
    3. \( \\frac{1}{3}ML^2 \)
    4. \( MR^2 \)
  17. The main scale in a micrometer screw gauge is fixed in the:
    1. Sleeve
    2. Thimble
    3. Anvil
    4. Barrel
  18. Decrease in amplitude of an oscillating simple pendulum is due to:
    1. Damping
    2. Coupling
    3. Resonance
    4. Gravity
  19. What is the intercept for the graph of \( G = \\frac{ap}{n} \)?
    1. \( a \)
    2. \( p \)
    3. \( n \)
    4. Zero
  20. What is the unit for specific heat capacity?
    1. \( \\text{J/kg·K} \)
    2. \( \\text{J/K} \)
    3. \( \\text{kg·K/J} \)
    4. \( \\text{J·kg/K} \)
  21. Diameter of a thin metal rod and thickness of a plate are measured with ___ and ___ respectively?
    1. Micrometer screw gauge, Vernier caliper
    2. Vernier caliper, Micrometer screw gauge
    3. Metre rule, Travelling microscope
    4. Travelling microscope, Metre rule
  22. Which instruments are needed to calculate the density of a metal ball?
    1. Optical pin, Beam balance
    2. Micrometer screw gauge, Beam balance
    3. Micrometer screw gauge, Travelling balance, Beam balance
    4. Vernier caliper, Beam balance
  23. Which instrument is used for measuring the diameter of a metal ball?
    1. Micrometer screw gauge
    2. Vernier caliper
    3. Vernier microscope
    4. Metre rule
  24. If the objective of an experiment is to test proportionality between two variables, the graph of the two variables must:
    1. Intercept on y-axis
    2. Intercept on x-axis
    3. Pass through the origin
    4. Be a straight line
  25. Two beakers of water in SHC experiment are at different temperatures. If one is at 100°C, the other is at:
    1. 303 K
    2. 100°C
    3. Room temperature
    4. Boiling point
  26. What is the reading accuracy of a micrometer screw gauge?
    1. 0.01 mm
    2. 0.1 mm
    3. 1 mm
    4. 0.001 mm
  27. What instrument is used to measure the diameter of the bore of a thermometer?
    1. Micrometer screw gauge
    2. Travelling microscope
    3. Vernier caliper
    4. Optical pin
  28. The slope \( n \) of the expression \( \\log e = y + n \) will be plotted on a graph as:
    1. Graph of \( \\log e \) on y-axis against \( t \) on x-axis
    2. Graph of \( \\log e \) on y-axis against \( \\log t \) on x-axis
    3. Graph of \( \\log e \) on x-axis against \( \\log t \) on y-axis
    4. Graph of \( e \) against \( t \)
  29. If the length of a string in Hooke’s law experiment is 0.75 m, what is its angular velocity? (Take \( g = 10 \\, \\text{m/s}^2 \))
    1. 2.67 rad/s
    2. 3.65 rad/s
    3. 3.57 rad/s
    4. 4.12 rad/s
  30. Which of the following is not needed in a simple harmonic experiment?
    1. Calorimeter
    2. Thermometer
    3. Test tube
    4. Stopwatch
  31. Hooke’s law (Dynamic) experiment studies the variation of:
    1. Mass at different time intervals
    2. Different masses at fixed time intervals
    3. Different masses at fixed periods of oscillation
    4. Mass at different periods of oscillation
  32. What is the slope of a graph of \( T^2 \) against \( h \) in a moment of inertia experiment?
    1. \( \\frac{g}{2(1 + \\frac{I}{m^2})} \)
    2. \( \\frac{2g}{2(1 + \\frac{I}{m^2})} \)
    3. \( \\frac{g}{2F(1 + \\frac{I}{m^2})} \)
    4. \( \\frac{g}{2(1 + \\frac{m^2}{I})} \)
  33. The distinct feature of SHC experiment without cooling correction is:
    1. Use of mass
    2. Use of temperature
    3. Use of time
    4. None of the above
  34. In SHC experiment, the water in both beakers is filled to:
    1. Half the volume
    2. One-third the volume
    3. Two-thirds the volume
    4. Full capacity
  35. The motion exhibited by a cylindrical drum rolling down an inclined plane includes:
    1. Circular & translational
    2. Rotational & translational
    3. Rotational & circular
    4. Linear & oscillatory
  36. 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. Breaking point is reached
  37. If a student measures speed as 2.97 × 10⁴ m/s and the actual value is 3.00 × 10⁴ m/s, the percentage error is:
    1. 1%
    2. 0.1%
    3. 0.01%
    4. 10%
  38. How to reduce friction between two surfaces in contact?
    1. Add a lubricant
    2. Increase surface roughness
    3. Apply more force
    4. Decrease temperature
  39. The aim of a viscosity experiment is to:
    1. Determine the resistance of a fluid to flow
    2. Measure the density of a ball bearing
    3. Calculate the gravitational acceleration
    4. Study surface tension effects

Register free to unlock all 39 questions with answers and explanations

SmartDriller logo

SmartDriller

Loading your past questions, mock exams, notes, and video tutorials...

Starting up…