General Practical Physics I — 2023 Past Questions

University of Ilorin PHY107: 41 questions.

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

1. Linearize the equation e^Y = P + e^(Bx)
   1. Y = ln(P) + Bx
   2. ln(Y) = P + Bx
   3. Y = P + Bx
   4. ln(Y) = ln(P) + Bx
2. Find the spring constant of a spring with force 500N and extension 5cm.
   1. 100 N/m
   2. 1000 N/m
   3. 10000 N/m
   4. 5000 N/m
3. Linearize T = 2π√(l/g). If the slope is 4.125, find the acceleration due to gravity (g).
   1. 9.6 m/s²
   2. 9.5 m/s²
   3. 9.8 m/s²
   4. 10.0 m/s²
4. Find the period of 20 oscillations with recorded times 22.4s, 23.2s, 22.9s.
   1. 1.14 s
   2. 1.12 s
   3. 1.15 s
   4. 1.10 s
5. A 250g copper at 170°C is dropped into 100g water at 0°C. Final temperature is 12°C. Find SHC of copper (SHC of water = 4200 J/kg/K).
   1. 127.6 J/kg/K
   2. 380 J/kg/K
   3. 420 J/kg/K
   4. 900 J/kg/K
6. The measuring accuracy of a vernier caliper is
   1. 0.1 mm
   2. 1 mm
   3. 0.01 mm
   4. 0.001 mm
7. The measuring accuracy of a micrometer screw gauge is
   1. 0.01 mm
   2. 0.001 mm
   3. 0.1 mm
   4. 1 mm
8. The lid of a calorimeter prevents heat loss primarily by
   1. Convection
   2. Conduction
   3. Radiation
   4. Evaporation
9. In an experiment to determine spring constant K, given spiral spring, stopwatch, retort stand, and weights, what is measured?
   1. Time for different masses
   2. Period for different lengths
   3. New length for different masses
   4. Extension for different masses
10. The knife edge of a vernier caliper measures
    1. Inside dimensions
    2. Outside dimensions
    3. Upward dimensions
    4. Downward dimensions
11. Tap water at 25°C and 75°C are mixed for 40°C bath. What is the ratio of cold to hot water?
    1. 75:25
    2. 8:5
    3. 7:3
    4. 3:8
12. A simple pendulum of period 2s has its length increased 4 times. New period is
    1. 1.25 s
    2. 3.5 s
    3. 4 s
    4. 0.625 s
13. An object's acceleration directed toward a fixed point is given by
    1. -ω²x
    2. (v-u)/t
    3. -k/x²
    4. x²/t²
14. In a rolling cylinder experiment, the motion is
    1. Periodic and cyclic
    2. Cyclic and rotational
    3. Translational and rotational
    4. Periodic and rotational
15. In a viscosity experiment, which equipment is required?
    1. Stopwatch, traveling microscope, glycerol, ball bearing, magnet, thread
    2. None
    3. Traveling microscope, ball bearing, magnet
    4. Stopwatch, glycerol, ball bearing, magnet
16. Heat given out by 350g brass cooled from 90°C to 25°C (SHC of brass = 380 J/kg/K) is
    1. 7599 J
    2. 7590 J
    3. 9075 J
    4. 9975 J
17. The copper lid of a calorimeter prevents heat loss by
    1. Transmission
    2. Convection
    3. Conduction
    4. Radiation
18. The least count of a micrometer screw gauge is
    1. 0.1 mm
    2. 0.01 mm
    3. 0.001 mm
    4. 0.2 mm
19. To ensure a vernier caliper is free of zero error, the zero marks must
    1. Coincide
    2. Be perpendicular
    3. Intercept
    4. Be diagonal
20. For the equation h = (2L²(1 + I/mr²))/gt², the slope of L² vs h is
    1. g/2(1 + I/mr²)
    2. g/(1 + I/mr²)
    3. g/2L²(1 + I/mr²)
    4. 1/L²(1 + I/mr²)
21. Heat transfer without a material medium is
    1. Propagation
    2. Conduction
    3. Convection
    4. Radiation
22. The internal diameter of a hollow tube is best measured with a
    1. Vernier caliper
    2. Metre rule
    3. Travelling microscope
    4. Micrometer screw gauge
23. If COTI's speed of light measurement is 2.9×10⁸ m/s (accepted: 3×10⁸ m/s), the % error is
    1. 1%
    2. 0.01%
    3. 10%
    4. 0.1%
24. In the equation a = gh/L(1 + I/mr²), h represents
    1. Height of the inclined plane
    2. Height of the cylindrical rod
    3. Length of the plane
    4. Radius of the rod
25. In a moment of inertia experiment, the vernier caliper measures
    1. Diameter of the rod
    2. Height of the plane
    3. Length of the plane
    4. Height of the rod
26. Hooke's law can calculate
    1. Spring constant
    2. String constant
    3. Hooke's constant
    4. Elastic constant
27. Heat transfer without contact is
    1. Convection
    2. Radiation
    3. Conduction
    4. Isomerization
28. The restoring force is represented by
    1. kx
    2. -kx
    3. k/x
    4. -k/x
29. The restoring force can be calculated by
    1. mgcosθ
    2. mgsinθ
    3. -mgcosθ
    4. -mgsinθ
30. The linearized form of T = ke^(bv) is
    1. lnT = lnk + bv
    2. T = lnk + bv
    3. lnT = k + bv
    4. T = k + bv
31. The linearized form of Q = Pa^x is
    1. lnQ = lnP + xlna
    2. Q = lnP + xlna
    3. lnQ = P + xlna
    4. Q = P + xlna
32. 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
33. The slope of T² against m in T = 2π√(m/k) is 0.5. What is k?
    1. 0.8π²
    2. 8π²
    3. 80π²
    4. 800π²
34. Which instrument is suitable for measuring the distance between two parallel lines?
    1. Vernier caliper
    2. Travelling microscope
    3. Micrometer screw gauge
    4. Metre rule
35. The linearized form of M = K + e^V is
    1. lnM = lnK + V
    2. M = lnK + V
    3. lnM = K + V
    4. M = K + V
36. What is the slope of Qm = ap^n?
    1. n/m
    2. 1/m
    3. 1/n
    4. m/n
37. Given a spiral spring, retort stand, and set of masses, what experiment is this?
    1. Determine spring constant k
    2. Determine extension e
    3. Determine period of oscillation
    4. Determine force constant
38. Hooke's law is used to determine
    1. Spring constant
    2. Strain constant
    3. Force constant
    4. Extension
39. Internal friction in a liquid is called
    1. Surface tension
    2. Amalgamation
    3. Viscosity
    4. Paschen
40. A Hookean spring extends 5 cm under 500 N load. Its spring constant is
    1. 2500 N/m
    2. 100 N/m
    3. 10000 N/m
    4. 1000 N/m
41. The curve in specific heat capacity by cooling method shows that
    1. Temperature decreases exponentially with time
    2. Heat loss is proportional to temperature difference
    3. Cooling rate depends on SHC
    4. All of the above

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