SSS One Physics Objective Examination Questions

1. All quantities in physics are said to be
A. physical quantities
A. natural quantities
C. artificial quantities
D. international quantities
2. Acceleration is defined as
A. velocity change/time
A. distance / time
C. distance × time
D. displacement × time
3. The S.I unit of energy is
A. Joules
A. watts
C. newtons
D. hertz
4. What will be the acceleration of a car that travelled from a velocity of 35m/s to 50m/s in 7s
A. 1.24m/s²
A. 2.14m/s²
C. 4.21m/s²
D. 3.41m/s²
5. The internationally agreed system of fundamental units (S.I) for physical measurement are
A. newton, feet and second
A. gramme, meter and second
C. kilogramme, meter and second
D. centimeter, gramme and second
6. The earth’s pull on a body is known as
A. mass
A. length
C. volume
D. weight
7. The two forms of mechanical energy are
A. kinetic energy and heat energy
A. kinetic energy and potential energy
C. kinetic energy and electric energy
D. heat energy and electric energy
8. Which of the following is the dimension of pressure
A. MLT^-2
B. ML^-1T^-2
C. MLT²T^-3
D. ML^-3
9. 1g is equivalent to
A. 0.001kg
A. 1000kg
C. 0.1kg
D. 100kg
10.When the rate of change of a displacement of a body is constant, the body is said to attain
A. average speed
A. uniform, velocity
C. actual velocity
D. instantaneous speed
11. Which of the following is a derived unit?
A. kilogramme
A. meter
C. newton
D. kelvin
12. The most natural time unit is
A. planet
A. earth
C. equator
D. solar day
13. 1 horse power (1 h.p) is equivalent to
A. 476 watts
A. 647 watts
C. 746 watts
D. 857 watts
14. Covert 3/4 hours 1/6 minutes 14seconds to seconds
A. 2274s
A. 2427s
C. 2724s
D. 4722s
15. Calculate the work done when a force of 7.5newton displace an object through 10meters
A. 75 Joules
A. 50 Joules
C. 57 Joules
D. 65 Joules
16. 1 kilowatt of power is equivalent to
A. 100 watts
A. 1000 watts
C. 10000 watts
D. 10 watts
17. The unit of time falls in the same group of fundamental quantities as
A. mass and density
A. length and volume
C. mass and length
D. density and volume
18. Velocity is defined as
A. distance / time
A. area covered / time
C. distance × time
D. displacement / time
19. How many seconds are in one day
A. 68400s
A. 48600s
C. 64800s
D. 86400s
20. Convert 36km/hr to m/s
A. 4m/s
A. 9m/s
C. 13m/s
D. 10m/s
21. If today is Sunday, what day of the week will it be after 211 day
A. Monday
A. Tuesday
C. Wednesday
D. Thursday
22. A geometric figure defined by two reference frames is known as
A. bearing
A. plane
C. pace
D. coordinate
23. Which of the following is a vector quantity?
A. speed
A. time
C. velocity
D. distance
24. Given the point A(4,3) and B(1,6), what is the distance AB
A. 2.44m
A. 2.12m
C. 1.22m
D. 4.24m
25. Which of these is not a methods of reducing friction
A. streamlining
A. lubrication
C. polishing
D. electroplating
26. A student walks a distance of 3km in 20 minutes. Calculate his average speed leaving your answer in m/s
A. 5m/s
A. 2m/s
C. 2.5m/s
D. 3m/s
27. Convert 72km/hr to m/min
A. 120m/min
A. 1200m/min
C. 12m/min
D. 12000m/min
28. Which of the following is not a fundamental unit?
A. radian
A. meter
C. ampere
D. kelvin
Use the information below to answer question 29 and 30.
An object of mass 5kg moves in a circle of radius 10m at uniform speed of 35m/s
29. Calculate the angular velocity
A. 3.5 rad/s
A. 4 rad/s
C. 2 rad/s
D. 8 rad/s
30. What will be the centripetal force?
A. 512N
A. 612.5N
C. 128.5N
D. 471.3N
31. What is the equivalent of a temperature of 120F in degree Celsius (0C)?
A. 248.00C
A. 393.00C
C. 153.00C
D. 48.90C
32. All these are characteristics of solid state of matter except
A. They have definite shape
A. They have definite volume
C. They have no definite shape and volume
D. They are tightly packed
33. Distance is to speed as displacement is to
A. Acceleration
A. Velocity
C. Position
D. distance
34. A thermos flask is used in keeping the temperature of its content constant. This means it prevents heat lost by:
(i)Induction (ii) Conduction (iii) Convection (iv) Radiation (v) Insulation
A. ii, iii and iv
A. i, ii and iv
C. i, ii and v
D. i, iv and v
35. Non-conductors are characterized by
A. Low conductivity and high resistivity
A. High conductivity and low resistivity
C. High conductivity and high resistivity
D. Low conductivity and low resistivity
36. Which of the following is not a factor affecting radiant energy?
A. Quantity of radiation
A. Temperature
C. Surface area
D. Nature of the surface
37. The S.I unit of electric charge is
A. Newton
A. Joules
C. Watts
D. Coulomb
38. Which of the following is not an effect of heat on a body?
A. Expansivity
A. Change of state
C. Decrease in temperature
D. Thermionic emission
39. The study of charges at rest is known as
A. Electrophorus
A. Electrostatics
C. Electroplating
D. Electroscope
40. A glass rod rubbed with silk produces
A. Positive charge
A. Negative charge
C. Neutral charge
D. None of the above
41. A region or space under the action or influence of some physical agencies is known as
A. Force
A. Field
C. Motion
D. Plane
42. The temperature of a body increase from 300C to 700C, what is the temperature change of the body in kelvin (K)?
A. 133K
A. 313K
C. 40K
D. 586K
43. A rod of initial length 2m at a temperature of 250C is heated to 800
C. Calculate the increase in length of the rod if its linear expansivity∝ is 4.0 X 10^-3K^-1
A. 4.40m
A. 44.00m
C. 0.04m
D. 0.44m
44. Negative charge is produced when you rub
A. Glass rod with silk
A. Ebonite rod with silk
C. ebonite rod with fur
D. Glass rod with fur
45. Very small current can be detected and measured by a sensitive instrument called
A. Ammeter
A. Galvanometer
C. voltmeter
D. Milliameter
46. The rate of flow of electric charges along a conductor is known as
A. Electric current
A. Resistivity
C. Electrostatic
D. Electrolysis
47. A device for converting chemical energy into electric energy is known as
A. Generator
A. Transformer
C. Cell
D. Electric motor
48. The most abundant sources of energy is
A. Heat energy
A. Wind energy
C. Solar energy
D. Chemical energy
49. Which of the following is not an insulator
A. Plastic
A. Paper
C. Wool
D. Metal
50. Which of the following is not a type of circuit?
A. Close circuit
A. Open circuit
C. Long circuit
D. Short circuit
Use the information below to answer questions 51-52.Use the information below to answer questions 51-52.
If two resistors 7𝛀 and 8𝛀 are connected together, calculate their net resistance
51. In series
A. 7𝛺
A. 15𝛺
C. 8𝛺
D. 1𝛺
52. In parallel
A. 3.70𝛺
A. 7.30𝛺
C. 1.90𝛺
D. 6.50𝛺
53. If an object has mass of 10kg, the weight of the object will be
A. 10N
A. 1N
C. 20N
D. 100N
54. A resistor with fixed resistance value is known as
A. Variable resistor
A. Normal resistor
C. Complete resistor
D. Standard resistor
55. The magnetism of a magnet is stronger at the
A. Pole
A. Bar
C. Field
D. Material
56. The mass of any atom is concentrated at the
A. Proton
A. Nucleus
C. Neutron
D. Electron
57. A thin aluminum plate has a surface of 1.500m² at 200C What will be its surface area when it is cooled to -200C (take the linear expansivity of aluminum to be 1.5 X 10^-55 K^-1-1)
A. 4.197m²
A. 9.741m²
C. 1.503m²
D. 7.419m²
Use the information below to answer questions 58 – 60
A metal rod of length 40.00cm at 200C is heated to a temperature of 450C. If the new length of the rod is 40.05cm, calculate
58. Its linear expansivity ∝
A. 2.5 X 10^-5K^-1
A. 5.2 X 10^-4K^-1
C. 5.0 X 10^-4K^-1
D. 5.0 X 10^-5K^-1
59. Its area expansivity 𝛽
A. 10.0 X 10^-5K^-1
A. 5.0 X 10^-5K^-1
C. 10.4 X 10^-4K^-1
D. 25.0 X 10^-4K^-1
60. Its volume expansivity ɤ
A. 7.5 X 10^-5K^-1
A. 15.0 X 10^-5K^-1
C. 15.6 X 10^-4K^-1
D. 15.0 X 10^-4K^-1
61. A piece of solid matter in which the atoms, molecules or ions are arranged in a highly regular repeating pattern or lattice is known as
A. Crystal
A. Unit
C. Cell
D. Amorphous
62. The deformation of a material is said to be elastic if the material
A. Continues to stretch
A. Return to its original position
C. Cannot stretch
D. Breaks into two parts
63. Which of the following is not an example of face-centred cubic crystal
A. Copper
A. Silver
C. Chromium
D. Lead
64. Error due to parallax can be avoided on all the following apparatus except
A. Potentiometer
A. Galvanometer
C. Stop clock
D. Pendulum bob
65. The ability of material to regain its original shape and size after being distorted by an external force is known as
A. Deformation
A. Plasticity
C. Extension
D. Elasticity
66. Non-crystalline substances are said to be amorphous because
A. they are tightly packed
A. They have definite shape
C. They are without form
D. They are usually soluble
67. One similarity between viscosity and friction is that both forces
A. Depend on areas of surface in contact
A. Oppose relative motion between surfaces
C. Depend on normal reaction
D. Depend on relative motion between two layers
68. A force of 1.8N extends a wire by 0.4cm, what force will extend the wire by 1.25cm if the elastic limit is not exceeded?
A. 5.625N
A. 65.205N
C. 25.562N
D. 2.565N
69. The energy contained in a wire when it is extended by 0.02m by a force of 500N is
A. 5J
A. 10J
C. 103J
D. 104J
70. The ability of a stretched or compressed elastic material to do work is called
A. Elastic potential energy
A. Force constant
C. Stiffness of material
D. Workdone
71. A component specifically designed to provide a known amount of resistance in a circuit is known as
A. Capacitor
A. Resistor
C. Inductor
D. Diode
72. The ratio of stress to strain in an elastic material is known as
A. Hooke’s law
A. Young’s modulus
C. Elastic constant
D. Elastic potential energy
73. A spiral spring is compressed by 0.03m. Calculate the energy stored in the spring if its force constant is 300N
A. 13.500J
A. 1.305J
C. 0.135J
D. 531.000J
74. The three types of circuit are the following except
A. Closed circuit
A. Open circuit
C. Loop circuit
D. Short circuit
75. The S.I unit of strain is
A. N/m2
A. N/m
C. Nm
D. No unit
76. Which of the following is not a fundamental S.I unit?
A. Kilogram (kg)
A. Meter (m)
C. Second (s)
D. Newton (N)
77. The tendency of a liquid to rise or fall in a narrow tube is known as
A. Adhesion
A. Surface tension
C. Cohesion
D. Capillarity
78. In graphing, the line that must cut across your best points is known as
A. Straight line
A. Tangential line
C. Line best fit
D. Best graph line
79. How many number of atoms has the body-centred cubic crystal
A. One
A. Nine
C. Fourteen
D. Eight
80. A spring of force constant 500N/m is compressed such that its length shortens by 5cm. The energy stored in the spring is
A. 0.625J
A. 6.250J
C. 62.500J
D. 625.000J
81. All the following are viscous materials except
A. Engine oil
A. Palm oil
C. Grease
D. Kerosine
82. Coils of wire in a circuit are meant to
A. provide an amount of resistance in the circuit
A. Bias the circuit
C. Limit or slow the rate or amount of charges entering the circuit
D. Convert alternating current to direct current
83. The tendon in a man’s leg is 0.01m long. If a force of 5N stretches the tendon by 2.0 x 10-5 m, calculate the strain on the muscles
A. 5 x 106
A. 2 x 10-3
C. 5 x 102
D. 2 x 10-7
84. The process of checking for faulty electrical components and ensuring continuity on circuit board or panel is known as
A. Troubleshooting
A. Overhauling
C. Maintenance
D. Repairing
85. When an object falls through a viscous liquid, it is subjected to the following forces except
A. Tension
A. Weight
C. Upthrust
D. Viscous force
86. Which of the following is not a common practical error in physics?
A. Systematic error
A. Physical error
C. Random error
D. Zero error
87. All the following are non-viscous liquid except
A. Water
A. Fuel
C. Glycerine
D. Kerosine
Use the information below to answer questions 88-90
A force of 40N applied at the end of a wire of length 4m and radius 0.001m processes an extension of 0.24mm. Take pi = 3.142 and calculate
88. Stress on the wire
A. 6.00 x 10-5 N/m²
A. 2.12 x 1011 N/m²
C. 21.20 x 10-7 N/m²
D. 12.74 x 106 N/m2
89. Strain in the wire
A. 5. 0 x 106
A. 2.0 x 10-3
C. 12.0 x 102
D. 6.0 x 10-5
90. Young’s modulus for the material of the wire
A. 2.12 x 1011N/m²
A. 12.74 x 106N/m² C. 21.20 x 10-6N/m²
D. 41.27 x 1011N/m²